| 1 | 5315-87-7 | (E)-2-(4-硝基亚苄基)肼-1-甲酰胺 | | C8H8N4O3
| 呋喃类 | |
| 2 | | 2-NP-SCA | 2-NP-SCA | C8H8N4O3
| | |
| 3 | 79927-25-6 | 2,3,6,9-四氢-1,3-二甲基-2,6-二氧代-1H-嘌呤-8-甲醛 | NSC 77354 | C8H8N4O3
| | |
| 4 | 52893-00-2 | 7-羟基[1,2,4]三唑并[1,5-A]嘧啶-6-甲酸乙酯 | MFCD00086159 | C8H8N4O3
| | |
| 5 | 957509-32-9 | 呋喃西林代谢物的13C,15N标记衍生物 | 2-NP-SCA-13C,15N2 | C8H8N4O3
| 呋喃类;同位素标记物 | |
| 6 | 31053-47-1 | 6-Ethyl-2,4,7-pteridinetriol | 6-Ethyl-2,4,7-pteridinetriol | C8H8N4O3
| | |
| 7 | 16004-43-6 | 2-Nitrobenzaldehyde Semicarbazone | 2-Nitrobenzaldehyde Semicarbazone | C8H8N4O3
| 呋喃类;分析标准品;生命科学标准品 | |
| 8 | 34397-00-7 | 7N-[1-(2-Carboxy)ethyl]allopurinol | 7N-[1-(2-Carboxy)ethyl]allopurinol | C8H8N4O3
| | |
| 9 | 6298-52-8 | 9H-Purine-9-acetic acid, 6-methoxy- | 9H-Purine-9-acetic acid, 6-methoxy- | C8H8N4O3
| | |
| 10 | 73978-85-5 | 2,4-Dimethoxy-7-oxo-7,8-dihydropteridin | 2,4-Dimethoxy-7-oxo-7,8-dihydropteridin | C8H8N4O3
| | |
| 11 | 760179-80-4 | [(E)-(2-nitrophenyl)methylideneamino]urea | [(E)-(2-nitrophenyl)methylideneamino]urea | C8H8N4O3
| | |
| 12 | 445408-71-9 | N-{4-nitrobenzylidene}hydrazinecarboxamide | N-{4-nitrobenzylidene}hydrazinecarboxamide | C8H8N4O3
| | |
| 13 | 666211-64-9 | 4-(ethylamino)-5-nitro-2,1,3-benzoxadiazole | 4-(ethylamino)-5-nitro-2,1,3-benzoxadiazole | C8H8N4O3
| | |
| 14 | 13300-40-8 | 8-(2-Hydroxyethyl)-2,4(3H,8H)-pteridinedione | 8-(2-Hydroxyethyl)-2,4(3H,8H)-pteridinedione | C8H8N4O3
| | |
| 15 | | 1-[(5-nitro-2-furyl)methyl]-1H-pyrazol-5-amine | 1-[(5-nitro-2-furyl)methyl]-1H-pyrazol-5-amine | C8H8N4O3
| | |
| 16 | 5019-57-8 | 3-Ethyl-5-(5-nitro-2-furanyl)-1H-1,2,4-triazole | 3-Ethyl-5-(5-nitro-2-furanyl)-1H-1,2,4-triazole | C8H8N4O3
| | |
| 17 | 2614-43-9 | 7-hydroxy-1,3-dimethyl-2,4(1H,3H)-pteridinedione | 7-hydroxy-1,3-dimethyl-2,4(1H,3H)-pteridinedione | C8H8N4O3
| | |
| 18 | 320420-13-1 | ETHYL N-[2-CYANO-3-(CYANOAMINO)ACRYLOYL]CARBAMATE | ETHYL N-[2-CYANO-3-(CYANOAMINO)ACRYLOYL]CARBAMATE | C8H8N4O3
| | |
| 19 | | 5-Methyl-4-(4-nitro-pyrazol-1-ylmethyl)-isoxazole- | 5-Methyl-4-(4-nitro-pyrazol-1-ylmethyl)-isoxazole- | C8H8N4O3
| | |
| 20 | 99584-43-7 | 2,4,6(1H,3H,5H)-Pteridinetrione, 3,7-dimethyl- (6CI) | 2,4,6(1H,3H,5H)-Pteridinetrione, 3,7-dimethyl- (6CI) | C8H8N4O3
| | |
| 21 | 690632-81-6 | 2-(2,1,3-BENZOXADIAZOL-5-YLOXY)-N'-HYDROXYETHANIMIDAMIDE | 2-(2,1,3-BENZOXADIAZOL-5-YLOXY)-N'-HYDROXYETHANIMIDAMIDE | C8H8N4O3
| | |
| 22 | | METHYL 1-METHYL-6-OXO-1,6-DIHYDRO-7H-PURINE-7-CARBOXYLATE | METHYL 1-METHYL-6-OXO-1,6-DIHYDRO-7H-PURINE-7-CARBOXYLATE | C8H8N4O3
| | |
| 23 | 1352723-55-7 | Ethyl 7-Hydroxy-[1,2,3]triazolo[1,5-a]pyriMidine-3-carboxylate | Ethyl 7-Hydroxy-[1,2,3]triazolo[1,5-a]pyriMidine-3-carboxylate | C8H8N4O3
| | |
| 24 | 110260-69-0 | METHYL 2-(7-HYDROXY[1,2,4]TRIAZOLO[1,5-A]PYRIMIDIN-5-YL)ACETATE | METHYL 2-(7-HYDROXY[1,2,4]TRIAZOLO[1,5-A]PYRIMIDIN-5-YL)ACETATE | C8H8N4O3
| | |
| 25 | 460739-66-6 | 2H-Imidazo[4,5-c]pyridin-2-one,1-ethyl-1,3-dihydro-4-nitro-(9CI) | 2H-Imidazo[4,5-c]pyridin-2-one,1-ethyl-1,3-dihydro-4-nitro-(9CI) | C8H8N4O3
| | |
| 26 | 4921-54-4 | 3,7-DIMETHYL-2,6-DIOXO-2,3,6,7-TETRAHYDRO-1H-PURINE-8-CARBALDEHYDE | 3,7-DIMETHYL-2,6-DIOXO-2,3,6,7-TETRAHYDRO-1H-PURINE-8-CARBALDEHYDE | C8H8N4O3
| | |
| 27 | 351185-23-4 | 2-aMino-4,7-dihydro-4-oxo-3H-Pyrrolo[2,3-d]pyriMidine-6-acetic acid | 2-aMino-4,7-dihydro-4-oxo-3H-Pyrrolo[2,3-d]pyriMidine-6-acetic acid | C8H8N4O3
| | |
| 28 | 1018125-47-7 | 6-(2-羟基乙基)-[1,2,4]三唑并[1,5-A]嘧啶-2-羧酸 | 6-(2-Hydroxyethyl)[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid | C8H8N4O3
| | |
| 29 | 344886-02-8 | 1H-1,2,4-Triazole-3-carboxylicacid,5-amino-,2-furanylmethylester(9CI) | 1H-1,2,4-Triazole-3-carboxylicacid,5-amino-,2-furanylmethylester(9CI) | C8H8N4O3
| | |
| 30 | 89977-78-6 | 7-氧代-3,7-二氢-[1,2,4]三唑并[1,5-A]嘧啶-6-羧酸乙酯 | ethyl 1,7-dihydro-7-oxo-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate | C8H8N4O3
| | |
| 31 | 1339450-15-5 | 2-(6-甲基-4-氧代-4,5-二氢-1H-吡唑并[3,4-D]嘧啶-1-基)乙酸 | 1H-Pyrazolo[3,4-d]pyrimidine-1-acetic acid, 4,5-dihydro-6-methyl-4-oxo- | C8H8N4O3
| | |
| 32 | 124738-76-7 | 1H-Pyrrolo[2,3-d]pyrimidine-5-carboxylicacid,2-amino-4,7-dihydro-4-oxo-, | 1H-Pyrrolo[2,3-d]pyrimidine-5-carboxylicacid,2-amino-4,7-dihydro-4-oxo-, | C8H8N4O3
| | |
| 33 | 124738-77-8 | Furo[2,3-d]pyrimidine-6-carboxylic acid, 2,4-diamino-, methyl ester (9CI) | Furo[2,3-d]pyrimidine-6-carboxylic acid, 2,4-diamino-, methyl ester (9CI) | C8H8N4O3
| | |
| 34 | 696631-99-9 | 7-氨基-5-甲基-[1,2,5]噁二唑[3,4-B]吡啶-6-羧酸甲酯 | [1,2,5]Oxadiazolo[3,4-b]pyridine-6-carboxylicacid,7-amino-5-methyl-,methyl | C8H8N4O3
| | |
| 35 | 2469903-46-4 | Pyrazolo[1,5-c]pyrimidine-3-carboxylic acid, 7-amino-5-hydroxy-, methyl ester | Pyrazolo[1,5-c]pyrimidine-3-carboxylic acid, 7-amino-5-hydroxy-, methyl ester | C8H8N4O3
| | |
| 36 | 810630-51-4 | methyl 2-(3-methyl-5-oxo-1H-imidazo[2,1-c][1,2,4]triazol-6(5H)-ylidene)acetate | methyl 2-(3-methyl-5-oxo-1H-imidazo[2,1-c][1,2,4]triazol-6(5H)-ylidene)acetate | C8H8N4O3
| | |
| 37 | 61165-14-8 | | 1H-Pyrrolo[3,2-d]pyrimidine-7-carboxamide, 2,3,4,5-tetrahydro-3-methyl-2,4-dioxo- | C8H8N4O3
| | |
| 38 | | 5,6-DIMETHYL-7-OXO-4,7-DIHYDRO-[1,2,4]TRIAZOLO-[1,5-A]PYRIMIDINE-2-CARBOXYLIC ACID | 5,6-DIMETHYL-7-OXO-4,7-DIHYDRO-[1,2,4]TRIAZOLO-[1,5-A]PYRIMIDINE-2-CARBOXYLIC ACID | C8H8N4O3
| | |
| 39 | 2105907-41-1 | 3H-1,2,3-Triazolo[4,5-c]pyridine-7-carboxylic acid, 4,5-dihydro-4-oxo-, ethyl ester | 3H-1,2,3-Triazolo[4,5-c]pyridine-7-carboxylic acid, 4,5-dihydro-4-oxo-, ethyl ester | C8H8N4O3
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