| 1 | 52482-62-9 | 3,7-二氢-1,3,7-三甲基-8-(1-甲基丙基)-1H-嘌呤-2,6-二酮 | NSC 101812 | C12H18N4O2
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| 2 | 66172-75-6 | 维罗茶碱 | Verofylline | C12H18N4O2
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| 3 | 35430-90-1 | N,N'-dicyanosebacamide | N,N'-dicyanosebacamide | C12H18N4O2
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| 4 | 2253194-12-4 | 维格列汀杂质O | vildagliptin Impurity O | C12H18N4O2
| 杂质对照品 | |
| 5 | | 1,3-Dimethyl-7-amylxanthine | 1,3-Dimethyl-7-amylxanthine | C12H18N4O2
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| 6 | | 1-n-butyl-3-n-propylxanthine | 1-n-butyl-3-n-propylxanthine | C12H18N4O2
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| 7 | 31542-63-9 | 1,3-二丙基-7-甲基黄嘌呤 | 1,3-Dipropyl-7-methylxanthine | C12H18N4O2
| 医药原料 | |
| 8 | | 1-Methyl-3-isobutyl-8-ethylxanthine | 1-Methyl-3-isobutyl-8-ethylxanthine | C12H18N4O2
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| 9 | | 1,8-DIMETHYL-3-(2-METHYLBUTYL)XANTHINE | 1,8-DIMETHYL-3-(2-METHYLBUTYL)XANTHINE | C12H18N4O2
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| 10 | 1702260-52-3 | 0999-A4 | 4-(4-ethylpiperazin-1-yl)-2-nitroaniline | C12H18N4O2
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| 11 | 35263-47-9 | N,N''-1,2-Phenylenebis(N',N'-dimethylurea) | N,N''-1,2-Phenylenebis(N',N'-dimethylurea) | C12H18N4O2
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| 12 | 943758-04-1 | 1-异丙基-4-(6-硝基-吡啶-3-基)哌嗪 | 1-Isopropyl-4-(6-nitropyridin-3-yl)piperazine | C12H18N4O2
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| 13 | | 1-(2-Pyrimidinyl)-4-(2-acetoxyethyl)piperazine | 1-(2-Pyrimidinyl)-4-(2-acetoxyethyl)piperazine | C12H18N4O2
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| 14 | 889851-51-8 | 1-isopropyl-4-(5-nitro-pyridin-2-yl)-piperazine | 1-isopropyl-4-(5-nitro-pyridin-2-yl)-piperazine | C12H18N4O2
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| 15 | | 2-[4-(Ethoxycarbonylmethyl)piperazino]pyrimidine | 2-[4-(Ethoxycarbonylmethyl)piperazino]pyrimidine | C12H18N4O2
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| 16 | | ethyl 2-[4-(pyrimidin-2-yl)piperazin-1-yl]acetate | ethyl 2-[4-(pyrimidin-2-yl)piperazin-1-yl]acetate | C12H18N4O2
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| 17 | | 2-METHYL-5-(4-METHYLPIPERAZIN-1-YL)-4-NITROANILINE | 2-METHYL-5-(4-METHYLPIPERAZIN-1-YL)-4-NITROANILINE | C12H18N4O2
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| 18 | | ethyl 4-(pyrazin-2-ylamino)piperidine-1-carboxylate | ethyl 4-(pyrazin-2-ylamino)piperidine-1-carboxylate | C12H18N4O2
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| 19 | 1002317-12-5 | N,N-Dimethyl-1-(6-nitro-3-pyridinyl)-4-piperidinamine | N,N-Dimethyl-1-(6-nitro-3-pyridinyl)-4-piperidinamine | C12H18N4O2
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| 20 | | 3-ethyl-1-{2-[(pyridin-4-ylmethyl)amino]propanoyl}urea | 3-ethyl-1-{2-[(pyridin-4-ylmethyl)amino]propanoyl}urea | C12H18N4O2
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| 21 | 1339229-21-8 | 4-Hydrazinyl-N-(2-(isopropylamino)-2-oxoethyl)benzamide | 4-Hydrazinyl-N-(2-(isopropylamino)-2-oxoethyl)benzamide | C12H18N4O2
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| 22 | 1116339-74-2 | 2-(4-甲基哌嗪-1-基)嘧啶-5-甲酸乙酯 | Ethyl 2-(4-methylpiperazin-1-yl)pyrimidine-5-carboxylate | C12H18N4O2
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| 23 | 1365969-81-8 | tert-Butyl 3-(pyrimidin-2-ylamino)azetidine-1-carboxylate | tert-Butyl 3-(pyrimidin-2-ylamino)azetidine-1-carboxylate | C12H18N4O2
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| 24 | | 1-{2-[(4-aminophenyl)(methyl)amino]propanoyl}-3-methylurea | 1-{2-[(4-aminophenyl)(methyl)amino]propanoyl}-3-methylurea | C12H18N4O2
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| 25 | 88477-37-6 | 苯三唑衍生物 | 2,2'-[[(Methyl-1H-benzotriazol-1-yl)methyl]imino]bis-ethanol | C12H18N4O2
| 缓蚀剂;甜味剂;成膜助剂;铜缓蚀剂;润滑油添加剂;塑料光稳定剂;合成材料中间体;抗氧剂和金属减活剂;油性剂和摩擦改进剂 | |
| 26 | 2411523-78-7 | tert-butyl ((4-cyano-1H-imidazol-2-yl)methyl)(ethyl)carbamate | tert-butyl ((4-cyano-1H-imidazol-2-yl)methyl)(ethyl)carbamate | C12H18N4O2
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| 27 | | 4,6-dimethyl-1-(2-oxo-2-piperazin-1-ylethyl)pyrimidin-2(1H)-one | 4,6-dimethyl-1-(2-oxo-2-piperazin-1-ylethyl)pyrimidin-2(1H)-one | C12H18N4O2
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| 28 | 887577-75-5 | 5-amino-6-(diallylamino)-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione | 5-amino-6-(diallylamino)-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione | C12H18N4O2
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| 29 | | 1-(4-formyl-1,3-dimethyl-1H-pyrazol-5-yl)piperidine-3-carboxamide | 1-(4-formyl-1,3-dimethyl-1H-pyrazol-5-yl)piperidine-3-carboxamide | C12H18N4O2
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| 30 | | 2-[(2-aminopyridin-3-yl)oxy]-1-(4-methylpiperazin-1-yl)ethan-1-one | 2-[(2-aminopyridin-3-yl)oxy]-1-(4-methylpiperazin-1-yl)ethan-1-one | C12H18N4O2
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| 31 | | 6-(2,6-dimethylmorpholin-4-yl)-N'-hydroxypyridine-3-carboximidamide | 6-(2,6-dimethylmorpholin-4-yl)-N'-hydroxypyridine-3-carboximidamide | C12H18N4O2
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| 32 | 1369134-25-7 | tert-butyl 4-amino-5H,6H,7H,8H-pyrido[3,4-d]pyrimidine-7-carboxylate | tert-butyl 4-amino-5H,6H,7H,8H-pyrido[3,4-d]pyrimidine-7-carboxylate | C12H18N4O2
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| 33 | 781607-51-0 | Pyrazinecarboxamide, N-[cis-4-amino-4-(hydroxymethyl)cyclohexyl]- (9CI) | Pyrazinecarboxamide, N-[cis-4-amino-4-(hydroxymethyl)cyclohexyl]- (9CI) | C12H18N4O2
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| 34 | | 2-AMINO-6-TERT-BUTOXYCARBONYL-5,6,7,8-TETRAHYDROPYRIDO-[4,3-D]-PYRIMIDINE | 2-AMINO-6-TERT-BUTOXYCARBONYL-5,6,7,8-TETRAHYDROPYRIDO-[4,3-D]-PYRIMIDINE | C12H18N4O2
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| 35 | | 5-amino-1-[2-(4-methylpiperazin-1-yl)-2-oxoethyl]-1,2-dihydropyridin-2-one | 5-amino-1-[2-(4-methylpiperazin-1-yl)-2-oxoethyl]-1,2-dihydropyridin-2-one | C12H18N4O2
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| 36 | 1369110-76-8 | tert-butyl 4-amino-2-methyl-5H,6H,7H-pyrrolo[3,4-d]pyrimidine-6-carboxylate | tert-butyl 4-amino-2-methyl-5H,6H,7H-pyrrolo[3,4-d]pyrimidine-6-carboxylate | C12H18N4O2
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| 37 | 875318-56-2 | 2-[4-(氨基甲基)-1-哌啶基]-5-嘧啶羧酸甲酯 | Methyl 2-[4-(aMinoMethyl)piperidin-1-yl]pyriMidine-5-carboxylate hydrochloride | C12H18N4O2
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| 38 | | 5-[(1-Methylpiperidin-2-ylidene)amino]-1H-pyrazole-4-carboxylic acid ethyl ester | 5-[(1-Methylpiperidin-2-ylidene)amino]-1H-pyrazole-4-carboxylic acid ethyl ester | C12H18N4O2
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| 39 | 946497-95-6 | 3''-氨基-5''-叔丁氧羰基-1'',4''-二氢螺[环丙烷-1,6''(5''H)-吡咯并[3,4-c]吡唑] | 3'-Amino-5'-Boc-1',4'-dihydrospiro[cyclopropane-1,6'(5'H)-pyrrolo[3,4-c]pyrazole] | C12H18N4O2
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| 40 | | 1,3-DIMETHYL-6-(3,4,5,6-TETRAHYDRO-2H-AZEPIN-7-YLAMINO)PYRIMIDINE-2,4(1H,3H)-DIONE | 1,3-DIMETHYL-6-(3,4,5,6-TETRAHYDRO-2H-AZEPIN-7-YLAMINO)PYRIMIDINE-2,4(1H,3H)-DIONE | C12H18N4O2
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| 41 | 1820576-17-7 | 3-Piperidinecarboxamide, N,1-dimethyl-2-(1-methyl-1H-pyrazol-5-yl)-6-oxo-, (2R,3R)- | 3-Piperidinecarboxamide, N,1-dimethyl-2-(1-methyl-1H-pyrazol-5-yl)-6-oxo-, (2R,3R)- | C12H18N4O2
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| 42 | 869198-95-8 | 2-氨基-7,8-二氢吡啶并[4,3-D]嘧啶-6(5H)-羧酸叔丁酯 | YRIDO[4,3-D]PYRIMIDINE-6(5H)-CARBOXYLIC ACID, 2-AMINO-7,8-DIHYDRO-, 1,1-DIMETHYLETHYL ESTER | C12H18N4O2
| 医药中间体 | |