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#Amines
tenth-sentence · 26 days
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Especially important in the biological world are the N-glycosides formed between D-ribose and 2-deoxy-D-ribose (each as a furanose), and the heterocyclic aromatic amines uracil, cytosine, thymine, adenine and guanine (figure 22.4).
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"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.
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whats-in-a-sentence · 26 days
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Especially important in the biological world are the N-glycosides formed between D-ribose and 2-deoxy-D-ribose (each as a furanose), and the heterocyclic aromatic amines uracil, cytosine, thymine, adenine and guanine (figure 22.4).
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"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.
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er-cryptid · 1 year
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mitivy · 2 months
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N-Methylaniline CAS 100-61-8 NMA factory sample is free have in stock
QUICK DETAILS Product name:N-Methylaniline CAS:100-61-8 Molecular formula:C7H9N Molecular weight:107.15 EINECS No.:202-870-9 Purity:≥99% Brand:MIT -IVY INDUSTRY CO.,LTD  Other names:N-methyl-aniline;N-Methylaniline;N-methylphenylamine;N-methyl-N-phenylamine;N-Phenylmethylamine;Methylaniline;N-methyl-aminobenzene;Methylphenylamine;N-Monomethylaniline Appearance:light yellow liquid Port: any port in china Packing:according to the clients requirement Physicochemical Property It is inflammable and explosive when it comes in contact with fire,high temperature and oxidizers. It is a pale yellow or reddish brown liquid that is dissolved in alcohol, ether chloroform and semisoluble in water.The molecular weight is 107.15,boiling point is 194-197℃ and the melting point is -57℃.   Application   This product is mainly applicable to pesticide intermediate, dyestuff intermediate, medicinal intermediate and organic synthetic materials, as well as used as gasoline octane booster, acid absorbent, solvent and explosive stabilizer. Storage & Transport It should be stored in the cool ware-houses with good ventilation,keep from fire and heat source, packed in the sealed container and separated from oxidizer, acidoid and edible chemicals. Mixed storage and transportation are not allowed. It must be protected from insolation,rain and heat during transport. Specification N- methyl aniline content is not less than % 99.5 99.0 98.0 95.0 Aniline content is not higher than % 0.1 0.2 0.4 3.0 Content of N,N- dimethylaniline is not higher than % 0.3 0.7 1.6 2.5 Moisture content is not higher than % 0.1 0.1 0.1 0.5 CAS:100-61-8 N-MethylAniline    NMA  PACKING  : 22.5 net TONS ISO TANK or IBC 1000KG we 1000monthly/ton payment  : TT 50% IN advance  ,the balance  by delivery the goods      MIT-IVY INDUSTRY is Product  organic intermediates in China.which location in  suzhou city  ANHUI  privince.Welcome to  our factory. Your company is a very well-known company. I saw your company's customs procurement data that many products you purchased are from our factory, but you purchased from foreign trade companies. 1:One of our main products is N-MethylAniline, purity min 99%, CAS number 100-61-8, chemical formula C7H9N. 2:We have a total of 6 production lines, and now we are starting 2 equipment. The monthly output of NMA is 1000 tons. 3) If out of stock, We will immediately activate the other equipment to fulfill the order. 4:  Recently, the market demand is very large, we are now going all out to produce, the use of technology is continuous production method, that is, gas chromatography 5:  We have in stock  for 500tons ,can deliver goods at any times.(But I've got a few clients in talks. They should be booked up soon.) 6: Can you come to inspect our  the factory ?   Storage: Store in dry, dark and ventilated place. Transportation: by sea or by air payment methods: L/C, T/T, D/A, D/P, O/A, paypal, western union etc.accept all payment.   Application 1. Used as a dye intermediate 2. N-Methylaniline is not only the raw material for the insecticide buprofezin, but also used for the synthesis of its intermediate N-chloromethyl N-phenylcarbamoyl chloride and the intermediate for the herbicide fenthiazide. It is widely used in the dye industry. 3. The product is used as an intermediate of organic synthesis, acid absorbent and solvent, and used in the production of cationic brilliant red FG, cationic peach red B, active yellow brown KGR, etc. in the dye industry. Сведения О Продукте   N-метиланилина NMA CAS 100-61-8 является анилин производной. Это органические соединения 
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с химической формулой C6H5NH(CH3) с кипения составляет 194-197C и точка плавления -57 C. . Вещество существует как бесцветная или слегка желтоватая вязкой жидкости и коричневого при контакте с воздуха . Химическое вещество нерастворимо в воде. это огнеопасных и взрывоопасных когда он приходит в контакт с огнем, высокой температуры и окислителей. он используется как латентных и растворителей муфты и также используется как промежуточного красители, агрохимикатов и других органических продуктов производства. NMA является токсичным и воздействие может вызвать повреждение центральной нервной системы и может также привести к печеночной и почечной недостаточности.   спецификации элемента первый класс второй класс общий класс Assay % ≥99.00 ≥98.50 ≥95.00 анилина % ≤0.30 ≤0.50 ≤2.50 N, N-диметиланилин % ≤0.50 ≤0.80 ≤2.00 других и влаги % ≤0.20 ≤0.20 ≤0.50   применения применяются главным образом к пестицидов промежуточные, красители промежуточные, лекарственные промежуточные и органические синтетические материалы , как хорошо как используется как бензина октановым руля, кислоты абсорбента, растворителей и взрывных стабилизатора .   упаковка 200 кг/Железный барабан, 80drums/20 ' FCL (16mt) Superiority  1. Best quality in your requirement  2. Competitive price in china market  3. Mature technical support  4. Professional logistic support  5 . Full experience of large numberscontainers loading in chinese sea port  6 .Fast shipment by reputed shipping line  7. Packing with pallet as buyer's special request  8. Best service after shipment.  9.  Full experience in export  10. Raw materials from chinese origin Chi Tiết Sản Phẩm   N Methylaniline NMA CAS 100-61-8 là một dẫn xuất anilin. Nó là một 
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hợp chất hữu cơ với công thức hóa học C6H5NH(CH3) với sôi là 194-197C và điểm nóng chảy là-57 C. . Các chất tồn tại như là một chất lỏng không màu hoặc màu vàng hơi nhớt và biến màu nâu khi tiếp xúc với không khí . Hóa chất được hòa tan trong nước. nó là dễ cháy nổ khi tiếp xúc với lửa, nhiệt độ cao và oxidizers. nó được sử dụng như là một tiềm ẩn và khớp nối dung môi và cũng sử dụng như trung gian cho thuốc nhuộm, agrochemicals và sản phẩm hữu cơ sản xuất. NMA là độc hại và tiếp xúc có thể gây ra thiệt hại cho hệ thần kinh trung ương và cũng có thể gây gan và suy thận.   đặc điểm kỹ thuật hàng đầu tiên lớp thứ hai lớp chung lớp khảo nghiệm % ≥99.00 ≥98.50 ≥95.00 Anilin % ≤0.30 ≤0.50 ≤2.50 N, N-dimethylaniline % ≤0.50 ≤0.80 ≤2.00 khác & ẩm % ≤0.20 ≤0.20 ≤0.50   ứng dụng chủ yếu áp dụng đối với thuốc trừ sâu Trung cấp, thuốc màu trung gian, y học Trung cấp và hữu cơ tổng hợp vật liệu , như cũng được sử dụng như xăng tăng cường chỉ số octan, chất ổn định acid thấm nước, dung môi và chất nổ .   đóng gói 200kg/sắt trống, 80drums/20 ' container (16mt) Company Information MIT-IVY INDUSTRY CO.,LTD is a manufacturer and exporter of fine chemical dyes & pharmaceutical intermediates in China. Mainly produce aniline series products and chlorine series products. We are a young company full of vitality and vitality. The company has a group of energetic, well-trained employees and strong technical research and development capabilities. We specialize in the production, development and sales of API intermediates, fine chemicals and plant extracts. Relying on advanced equipment and strict management, adhere to the business philosophy of "openness, tolerance, innovation, and sharing" to create a win-win cooperationplatform.Everything comes from innovation, it is our philosophy ! If you are interested in getting more quotations, please add WHATSAPP:0086-13805212761 or E-MAIL:[email protected] Main products MIT-IVYINDUSTRYCO.,LTD Mit-Ivy is a well-known fine chemicals and pharmaceutical intermediates manufacturer with strong R&D support in China. Mainly involved Aniline, Chlorine products. Payment:DA 60 DAYS TEL:008619961957599   E-MAIL:[email protected] 产品 Product CAS N,N-二甲基-1,4-苯二胺 N,N-Dimethyl-1,4-phenylenediamine DMPD 99-98-9 N,N-二甲基苄胺 N,N-Dimethylbenzylamine  BDMA 103-83-3 N,N-二甲基甲酰胺   N,N-Dimethylformamide  DMF .68-12-2 N,N-二甲基甲酰胺二甲缩醛 DMF-DMA N,N-Dimethylformamidedimethyl acetal  (DMF-DMA) 4637-24-5 N,N-二甲基乙酰胺 N,N-Dimethylacetamide   DMAC 127-19-5 N,N-二乙基间甲苯甲酰胺 避蚊胺 N,N-diethyl-m-toluamide    DEET 134-62-3 N,N-二乙基羟胺 N,N-Diethylhydroxylamine  DEHA 3710-84-7 N-甲基-N-羟乙基苯胺 2-(N-甲基苯胺)乙醇 2-(N-methylanilino)ethanol 93-90-3 N-甲基吡咯烷酮 N-methylpyrrolidone 872-50-4 N,N-二甲基苯胺 N,N-Dimethylaniline   DMA 121-69-7 N,N-二甲基对甲苯胺 N,N-Dimethyl-p-toluidine  DMPT 99-97-8 N,N-二甲基邻甲苯胺 N,N-Dimethyl-o-toluidine   DMOT 609-72-3 N,N-二乙基苯胺 N,N-Diethylaniline 91-66-7 N,N-二乙基间甲苯胺 N,N-Diethyl-m-toluidine 91-67-8 N,N-二羟乙基苯胺 N,N-Dihydroxyethylaniline   PDEA 120-07-0 N-乙基间甲苯胺 N-乙基-3-甲基苯胺 N-Ethyl-m-toluidine/N-Ethyl-3-methylaniline 102-27-2 N-乙基-N-氰乙基苯胺 3-(N-ethylanilino)propiononitrile 148-87-8 N-乙基-N-羟乙基苯胺 N-Ethyl-N-hydroxyethylaniline 92-50-2 N-乙基-N-苄基苯胺 乙基苄基苯胺; N-苄基-N-乙基苯胺 N-ethyl-N-phenylbenzenemethanamine 92-59-1 N-乙基-N-氰乙基间甲苯胺 N-2-cyanoethyl-N-ethyl-m-toluidine 148-69-6 N-乙基-N-苄基间甲苯胺 N-Benzyl-N-ethyl-m-toluidine 119-94-8 N-乙基邻甲苯胺 N-Ethyl-o-toluidine/2-Ethylaminotoluene 94-68-8 N-乙基苯胺 N-Ethylaniline 103-69-5 N-甲基苯胺 N-Methylaniline 100-61-8 N,N-二甲基-间甲基苯胺 N,N-DIMETHYL-M-TOLUIDINE 121-72-2 N-甲基二苯胺 N-Methyldiphenylamine 552-82-9 N-甲基-邻甲基苯胺 N-METHYL-O-TOLUIDINE 611-21-2 N-甲基-对甲基苯胺 N-METHYL-P-TOLUIDINE 623-08-5 4-甲基-N-苯基苯胺 N-PHENYL-P-TOLUIDINE 620-84-8 N-异丙基苯胺 N-ISOPROPYLANILINE 768-52-5 N,N-二氰乙基苯胺 N,N-Dicyanoethylaniline 1555-66-4 N,N-二羟乙基-对甲基苯胺 N,N-DIHYDROXYETHYL-P-TOLUIDINEDHEPT .3077-12-1 N-乙基-2-硝基苯胺 N-Ethyl-2-Nitro-Benzenamine 10112-15-9 2,4-二氯苯胺 2,4Dichloroaniline 554-00-7 N-(2-羟乙基)乙二胺 AEEA 111-41-1 1,3-二甲基-2-咪唑啉酮N,N-二甲基亚乙基脲1,3-二甲基-2-咪唑啉酮(DMI) 1,3-Dimethyl-2-imidazolidinone  DMI N,N'-dimethylimidazolidinone 80-73-9 N,N-二苄基羟胺 N,N-Dibenzylhydroxylamine 621-07-8 对甲苯胺 P-Toluidine  PT 106-49-0 邻甲苯胺    O-Toluidine  OT  95-53-4 二乙基乙醇胺 DEEA;DEAE 100-37-8 甲萘胺 AlphaNaphthylamine 134-32-7 间二氯苯 1,3-Dichlorobenzene   MDCB 541-73-1 间甲苯胺 M-Toluidine  MT 108-44-1 间苯二胺 M-PHENYLENEDIAMINE  MPDA 108-45-2 多乙烯多胺 PEPA 68131-73-7 二乙烯三胺(DETA) Diethylenetriamine  DETA 111-40-0 三乙烯二胺 Triethylenediamine 280-57-9 三乙烯四胺 TriethylenetetramineTETA 112-24-3 四乙烯五胺 TEPA 112-57-2 Read the full article
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bucket-of-amethyst · 15 days
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HAPPY NEIL BANGING OUT THE TUNES DAY!!! 🎶 🎹 🐀 🌈
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vavaclasses · 3 months
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Class 12 Chemistry Amines: Structure and formula
Class 12 Chemistry introduces students to the fascinating realm of amines, a class of organic compounds that plays a vital role in understanding the intricacies of organic chemistry. In this article, we'll unravel the essential aspects covered in Class 12 Chemistry notes on amines, providing a comprehensive overview for students embarking on this academic journey.
Introduction to Amines:
Amines, derived from ammonia (NH3), represent a unique class of organic compounds characterised by the substitution of hydrogen atoms with organic groups. These compounds are classified as primary, secondary, or tertiary amines based on the number of organic groups attached to the nitrogen atom.
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Classification of Amines: Classification and Nomenclature of Amines in Class 12 Chemistry:
Amines, organic compounds derived from ammonia, are classified based on the number of organic groups attached to the nitrogen atom. The classification includes primary (1°), secondary (2°), and tertiary (3°) amines. Understanding their nomenclature is crucial for effective communication in organic chemistry. Let's explore the classification and nomenclature of amines in Class 12 Chemistry.
Primary Amine (1° Amine): Structure: H-N-R Example: Methylamine (CH3NH2) General Formula: RNH2
Secondary Amine (2° Amine): Structure: R1-N-R2 Example: Dimethylamine ((CH3)2NH) General Formula: R1NR2
Tertiary Amine (3° Amine): Structure: R1-N-R2-R3 Example: Trimethylamine ((CH3)3N) General Formula: R1NR2R3
Aromatic Amine: Aromatic amines involve the amino group attached to an aromatic ring. Aniline (C6H5NH2) is a notable example in this category. Nomenclature of Amines: The IUPAC system is employed for naming amines, involving the following principles:
Selecting the Longest Carbon Chain:
The longest carbon chain containing the amino group is identified.
Numbering the Chain:
The carbon atoms in the chain are numbered, with the amino group receiving the lowest possible number.
Naming Alkyl or Aryl Groups:
Alkyl or aryl groups attached to the nitrogen atom are named as substituents.
Using Prefixes:
The prefixes "methyl," "ethyl," etc., are used for alkyl groups, while aryl groups are named specifically.
Adding the Suffix:
The suffix "-amine" is added to the substituent names, indicating the presence of the amino group. Example: Consider the compound (CH3CH2NH2).
Longest Carbon Chain: Ethylamine
IUPAC Name: Ethylamine Common Names for Aromatic Amines: Aromatic amines often have common names that are widely accepted in addition to IUPAC names. For example, aniline (C6H5NH2) is a common name for the aromatic amine with a phenyl group attached to the amino group. Understanding the classification and nomenclature of amines in Class 12 Chemistry is fundamental to grasping the intricacies of organic chemistry. As students navigate the diverse world of amines, they gain insights into the systematic nomenclature and structural variations that define this essential class of compounds.
Reactivity and Properties: Amines exhibit unique properties, including a characteristic "fishy" odor and the ability to act as both bases and nucleophiles due to the lone pair of electrons on the nitrogen atom. Understanding their reactivity is crucial in predicting and explaining various chemical reactions.
Applications: The applications of amines span multiple industries. From pharmaceuticals to agriculture, amines play a vital role in the synthesis of various compounds and products.
Conclusion: Class 12 Chemistry notes on amines provide students with a foundation to explore the diverse world of organic compounds. As students delve into the intricacies of amines, they unlock a gateway to understanding the applications, reactions, and significance of these compounds in the broader field of chemistry. Armed with this knowledge, students are well-prepared to navigate the challenges and discoveries that organic chemistry presents.
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mansand · 3 months
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twisting him into exquisite shapes
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goobersplat · 2 years
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More Bat Plush!
Albino Flying fox Plush, Black Bat, Choko Bat, Vlad the Vampire Stuffed Bat, Canyon Bat Plush, Cute Albino Bat Plush.
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tenth-sentence · 2 months
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Some of the more common methods will be discussed here.
"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.
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onebug · 4 months
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hey check out this original idea
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aquaticplushies · 8 months
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Plush Nautilus made by ??? !!
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mitivy · 2 months
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N-Methylaniline CAS 100-61-8 NMA factory sample is free have in stock
+ 86 13805212761 QUICK DETAILS Product name:N-Methylaniline CAS:100-61-8 Molecular formula:C7H9N Molecular weight:107.15 EINECS No.:202-870-9 Purity:≥99% Brand:MIT -IVY INDUSTRY CO.,LTD Other names:N-methyl-aniline;N-Methylaniline;N-methylphenylamine;N-methyl-N-phenylamine;N-Phenylmethylamine;Methylaniline;N-methyl-aminobenzene;Methylphenylamine;N-Monomethylaniline Appearance:light yellow liquid Port: any port in china Packing:according to the clients requirement Storage: Store in dry, dark and ventilated place. Transportation: by sea or by air payment methods: L/C, T/T, D/A, D/P, O/A, paypal, western union etc.accept all payment. Application 1. Used as a dye intermediate 2. N-Methylaniline is not only the raw material for the insecticide buprofezin, but also used for the synthesis of its intermediate N-chloromethyl N-phenylcarbamoyl chloride and the intermediate for the herbicide fenthiazide. It is widely used in the dye industry. 3. The product is used as an intermediate of organic synthesis, acid absorbent and solvent, and used in the production of cationic brilliant red FG, cationic peach red B, active yellow brown KGR, etc. in the dye industry. Superiority 1. Best quality in your requirement 2. Competitive price in china market 3. Mature technical support 4. Professional logistic support 5 . Full experience of large numberscontainers loading in chinese sea port 6 .Fast shipment by reputed shipping line 7. Packing with pallet as buyer's special request 8. Best service after shipment. 9.  Full experience in export 10. Raw materials from chinese origin Company Information MIT-IVY INDUSTRY CO.,LTD is a manufacturer and exporter of fine chemical dyes & pharmaceutical intermediates in China. Mainly produce aniline series products and chlorine series products. We are a young company full of vitality and vitality. The company has a group of energetic, well-trained employees and strong technical research and development capabilities. We specialize in the production, development and sales of API intermediates, fine chemicals and plant extracts. Relying on advanced equipment and strict management, adhere to the business philosophy of "openness, tolerance, innovation, and sharing" to create a win-win cooperationplatform.Everything comes from innovation, it is our philosophy ! If you are interested in getting more quotations, please add WHATSAPP:0086-13805212761 or E-MAIL:[email protected] Main products MIT-IVYINDUSTRYCO.,LTDMit-Ivy is a well-known fine chemicals and pharmaceutical intermediates manufacturer with strong R&D support in China. Mainly involved Aniline, Chlorine products. Payment:DA 60 DAYS TEL:008619961957599   E-MAIL:[email protected] 产品 Product CAS N,N-二甲基-1,4-苯二胺 N,N-Dimethyl-1,4-phenylenediamine DMPD 99-98-9 N,N-二甲基苄胺 N,N-Dimethylbenzylamine  BDMA 103-83-3 N,N-二甲基甲酰胺   N,N-Dimethylformamide  DMF .68-12-2 N,N-二甲基甲酰胺二甲缩醛 DMF-DMA N,N-Dimethylformamidedimethyl acetal  (DMF-DMA) 4637-24-5 N,N-二甲基乙酰胺 N,N-Dimethylacetamide   DMAC 127-19-5 N,N-二乙基间甲苯甲酰胺 避蚊胺 N,N-diethyl-m-toluamide    DEET 134-62-3 N,N-二乙基羟胺 N,N-Diethylhydroxylamine  DEHA 3710-84-7 N-甲基-N-羟乙基苯胺 2-(N-甲基苯胺)乙醇 2-(N-methylanilino)ethanol 93-90-3 N-甲基吡咯烷酮 N-methylpyrrolidone 872-50-4 N,N-二甲基苯胺 N,N-Dimethylaniline   DMA 121-69-7 N,N-二甲基对甲苯胺 N,N-Dimethyl-p-toluidine  DMPT 99-97-8 N,N-二甲基邻甲苯胺 N,N-Dimethyl-o-toluidine   DMOT 609-72-3 N,N-二乙基苯胺 N,N-Diethylaniline 91-66-7 N,N-二乙基间甲苯胺 N,N-Diethyl-m-toluidine 91-67-8 N,N-二羟乙基苯胺 N,N-Dihydroxyethylaniline   PDEA 120-07-0 N-乙基间甲苯胺 N-乙基-3-甲基苯胺 N-Ethyl-m-toluidine/N-Ethyl-3-methylaniline 102-27-2 N-乙基-N-氰乙基苯胺 3-(N-ethylanilino)propiononitrile 148-87-8 N-乙基-N-羟乙基苯胺 N-Ethyl-N-hydroxyethylaniline 92-50-2 N-乙基-N-苄基苯胺 乙基苄基苯胺; N-苄基-N-乙基苯胺 N-ethyl-N-phenylbenzenemethanamine 92-59-1 N-乙基-N-氰乙基间甲苯胺 N-2-cyanoethyl-N-ethyl-m-toluidine 148-69-6 N-乙基-N-苄基间甲苯胺 N-Benzyl-N-ethyl-m-toluidine 119-94-8 N-乙基邻甲苯胺 N-Ethyl-o-toluidine/2-Ethylaminotoluene 94-68-8 N-乙基苯胺 N-Ethylaniline 103-69-5 N-甲基苯胺 N-Methylaniline 100-61-8 N,N-二甲基-间甲基苯胺 N,N-DIMETHYL-M-TOLUIDINE 121-72-2 N-甲基二苯胺 N-Methyldiphenylamine 552-82-9 N-甲基-邻甲基苯胺 N-METHYL-O-TOLUIDINE 611-21-2 N-甲基-对甲基苯胺 N-METHYL-P-TOLUIDINE 623-08-5 4-甲基-N-苯基苯胺 N-PHENYL-P-TOLUIDINE 620-84-8 N-异丙基苯胺 N-ISOPROPYLANILINE 768-52-5 N,N-二氰乙基苯胺 N,N-Dicyanoethylaniline 1555-66-4 N,N-二羟乙基-对甲基苯胺 N,N-DIHYDROXYETHYL-P-TOLUIDINEDHEPT .3077-12-1 N-乙基-2-硝基苯胺 N-Ethyl-2-Nitro-Benzenamine 10112-15-9 2,4-二氯苯胺 2,4Dichloroaniline 554-00-7 N-(2-羟乙基)乙二胺 AEEA 111-41-1 1,3-二甲基-2-咪唑啉酮N,N-二甲基亚乙基脲1,3-二甲基-2-咪唑啉酮(DMI) 1,3-Dimethyl-2-imidazolidinone  DMI N,N'-dimethylimidazolidinone 80-73-9 N,N-二苄基羟胺 N,N-Dibenzylhydroxylamine 621-07-8 对甲苯胺 P-Toluidine  PT 106-49-0 邻甲苯胺 O-Toluidine  OT 95-53-4 二乙基乙醇胺 DEEA;DEAE 100-37-8 甲萘胺 AlphaNaphthylamine 134-32-7 间二氯苯 1,3-Dichlorobenzene   MDCB 541-73-1 间甲苯胺 M-Toluidine  MT 108-44-1 间苯二胺 M-PHENYLENEDIAMINE  MPDA 108-45-2 多乙烯多胺 PEPA 68131-73-7 二乙烯三胺(DETA) Diethylenetriamine  DETA 111-40-0 三乙烯二胺 Triethylenediamine 280-57-9 三乙烯四胺 TriethylenetetramineTETA 112-24-3 四乙烯五胺 TEPA 112-57-2 Read the full article
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