| Structure | Chemical Name | CAS | MF | 
|  | 2,4-Diamino-6-hydroxypyrimidine | 56-06-4 | C4H6N4O | 
|  | 2,4,5-Triamino-6-hydroxypyrimidine sulfate | 35011-47-3 | C4H9N5O5S | 
|  | 4,5-Diamino-6-hydroxypyrimidine | 1672-50-0 | C4H6N4O | 
|  | 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride | 56830-58-1 | C4H7ClN4O2 | 
|  | 5-Methoxy-2,4-pyrimidinediol | 6623-81-0 | C5H6N2O3 | 
|  | 2,4-DIMETHYL-6-HYDROXYPYRIMIDINE | 6622-92-0 | C6H8N2O | 
|  | 6-Aminouracil | 873-83-6 | C4H5N3O2 | 
|  | 2-Hydroxypyrimidine | 557-01-7 | C4H4N2O | 
|  | 5-Bromo-2-hydroxypyrimidine | 38353-06-9 | C4H3BrN2O | 
|  | 2-Amino-6-chloro-4-pyrimidinol | 1194-21-4 | C4H4ClN3O | 
|  | 4-Hydroxy-6-aminopyrimidine | 1193-22-2 | C4H5N3O | 
| ![Pyrrolo[2,3-d]pyrimidin-4-ol](../cas/gif/3680-71-5.gif) | Pyrrolo[2,3-d]pyrimidin-4-ol | 3680-71-5 | C6H5N3O | 
|  | 4,6-Dihydroxypyrimidine | 1193-24-4 | C4H4N2O2 | 
|  | 4,6-DIHYDROXY-5-METHYLPYRIMIDINE | 63447-38-1 | C5H6N2O2 | 
|  | 2-Hydroxypyrimidine hydrochloride | 38353-09-2 | C4H5ClN2O | 
|  | 2,5-Diamino-4,6-dihydropyrimidine hemisulfate salt | 102783-67-5 | C8H14N8O8S | 
|  | 2-Amino-5-hydroxypyrimidine | 143489-45-6 | C4H5N3O | 
| ![7H-Pyrrolo[2,3-d]pyrimidine-2,4-diol](../cas/gif/39929-79-8.gif) | 7H-Pyrrolo[2,3-d]pyrimidine-2,4-diol | 39929-79-8 | C6H5N3O2 | 
|  | 4-Pyrimidinol | 51953-18-5 | C4H4N2O | 
|  | 4-Hydroxypyrimidine-5-carboxylic acid methyl ester | 4774-35-0 | C6H6N2O3 | 
| ![4-AMINO-6-HYDROXYPYRAZOLO[3,4-D]PYRIMIDINE](../cas/gif/5472-41-3.gif) | 4-AMINO-6-HYDROXYPYRAZOLO[3,4-D]PYRIMIDINE | 5472-41-3 | C5H5N5O | 
|  | 4,6-Dihydroxy-5-formylpyrimidine | 14256-99-6 | C5H4N2O3 | 
|  | URACIL-5-BORONIC ACID | 70523-22-7 | C4H5BN2O4 | 
|  | 4-HYDROXY-5-NITROPYRIMIDINE | 219543-69-8 | C4H3N3O3 | 
|  | 4-((4-Oxo-1,4-dihydropyriMidin-2-yl)aMino)benzonitrile | 189956-45-4 | C11H8N4O | 
|  | 2-THIOBARBITURIC ACID SODIUM SALT | 31645-12-2 | C4H5N2NaO2S | 
|  | 5-Hydroxy-2-methylpyrimidine | 35231-56-2 | C5H6N2O | 
|  | 5-Fluoropyrimidine-4,6-diol | 106615-61-6 | C4H3FN2O2 | 
|  | 4(1H)-Pyrimidinone, 2-amino-6-ethyl- (9CI) | 5734-66-7 | C6H9N3O | 
|  | 2-AMINO-5-CARBOETHOXY-4-HYDROXYPYRIMIDINE | 15400-53-0 | C7H9N3O3 | 
|  | 2-HYDROXYPYRIMIDINE-5-CARBOXYLIC ACID | 38324-83-3 | C5H4N2O3 | 
|  | 2-(TRIFLUOROMETHYL)PYRIMIDINE-4,6-DIOL | 672-47-9 | C5H3F3N2O2 | 
|  | (1,2-dihydro-2-oxo-5-Pyrimidinyl)-boronic acid | 373384-19-1 | C4H5BN2O3 | 
|  | 1-(2-HYDROXYETHOXY)METHYL-5-METHYLURACIL | 68724-11-8 | C8H12N2O4 | 
|  | 4-AMINO-2-(METHYLTHIO)-6-PYRIMIDINOL | 1074-41-5 | C5H7N3OS | 
| ![2-methylthieno[2,3-d]pyrimidin-4(3H)-one](../cas/gif/21582-51-4.gif) | 2-methylthieno[2,3-d]pyrimidin-4(3H)-one | 21582-51-4 | C7H6N2OS | 
|  | 5-Pyrimidinol, 2-(methylthio)- (6CI,7CI,8CI,9CI) | 4874-33-3 | C5H6N2OS | 
|  | 4,6-DIMETHYL-2-HYDROXYPYRIMIDINE HYDROCHLORIDE | 34289-60-6 | C6H9ClN2O | 
|  | 4-HYDROXY-6-METHYLPYRIMIDINE | 156647-96-0 | C5H6N2O | 
|  | 4,6-DIHYDROXY-5-NITROPYRIMIDINE | 2164-83-2 | C4H3N3O4 | 
|  | 2-Amino-4,6-dihydroxypyrimidine | 56-09-7 | C4H5N3O2 | 
|  | 2-AMINO-4-CHLORO-6-HYDROXY-5-NITROPYRIMIDINE | 1007-99-4 | C4H3ClN4O3 | 
|  | 2-HYDROXY-4-HYDRAZINO-PYRIMIDINE | 3310-41-6 | C4H6N4O | 
|  | 4,6-Dimethyl-2-hydroxypyrimidine | 108-79-2 | C6H8N2O | 
|  | 2-AMINO-5,6-DIMETHYL-4-HYDROXYPYRIMIDINE | 3977-23-9 | C6H9N3O | 
|  | 6-Oxo-3H-pyrimidine-4-carboxylic acid | 6299-87-2 | C5H4N2O3 | 
|  | 2,5-Diamino-4,6-dihydroxy-pyrimidine | 40769-69-5 | C4H6N4O2 | 
|  | 3,5-DIBROMO-2-HYDROXYPYRIDINE | 13472-81-6 | C5H3Br2NO | 
|  | 4,6-Dihydroxy-2-methylpyrimidine | 1194-22-5 | C5H6N2O2 | 
|  | 4-HYDROXY-2-METHYL-PYRIMIDINE-5-CARBOXYLIC ACID ETHYL ESTER | 53135-24-3 | C8H10N2O3 | 
|  | 2-Ethoxy-4,6-dihydroxypyrimidine | 61636-08-6 | C6H8N2O3 | 
|  | 5-BROMO-2-HYDROXYPYRIMIDINE | 214290-49-0 | C4H3BrN2O | 
|  | 5-Hydroxypyrimidine | 26456-59-7 | C4H4N2O | 
|  | Ethyl 4-hydroxypyrimidine-5-carboxylate | 4786-52-1 | C7H8N2O3 | 
|  | 4(1H)-Pyrimidinone, 2-chloro- (9CI) | 55873-09-1 | C4H3ClN2O | 
|  | 5-Pyrimidinecarboxylic acid, 1,2-dihydro-2-oxo-, methyl ester (9CI) | 50628-34-7 | C6H6N2O3 | 
|  | Ethyl 2-hydroxy-4-methyl-5-pyrimidinecarboxylate | 6214-64-8 | C8H10N2O3 | 
|  | 4(1H)-Pyrimidinone, 5-fluoro-6-hydroxy-2-methyl- (9CI) | 1598-63-6 | C5H5FN2O2 | 
|  | 6-HYDROXY-2-METHYLPYRIMIDINE-4-ACETIC ACID METHYL ESTER | 64532-22-5 | C7H8N2O3 | 
|  | 4,5-Dimethyl-2-pyrimidinol | 34939-17-8 | C6H8N2O | 
|  | Ethyl (2-amino-4-hydroxy-6-methyl-5-pyrimidinyl)acetate | 499209-19-7 | C9H13N3O3 | 
|  | 5-Pyrimidinol, 2-amino-4,6-dimethoxy- (9CI) | 267224-18-0 | C6H9N3O3 | 
|  | 4-HYDROXY-2-METHYL-PYRIMIDINE-5-CARBOXYLIC ACID ETHYL ESTER | 67383-32-8 | C8H10N2O3 | 
|  | 2-Ethyl-4,6-dihydroxypyrimidine |  | C6H8N2O2 | 
|  | 5-Hydroxy-2-pyrimidinecarbonitrile | 345642-86-6 | C5H3N3O | 
|  | (4-HYDROXY-2,6-DIMETHYL-PYRIMIDIN-5-YL)-ACETIC ACID | 5536-40-3 | C8H10N2O3 | 
|  | 5-HYDROXYPYRIMIDINE | 284682-27-5 | C4H4N2O | 
|  | 2-Pyrimidinol, 5-chloro- (9CI) | 214290-50-3 | C4H3ClN2O | 
|  | 4-Pyrimidinecarboxylic acid, 1,6-dihydro-2-methyl-6-oxo- | 34415-10-6 | C6H6N2O3 | 
|  | 2,4-Diamino-6-hydroxypyrimidine ,98% | 195-66-4 | C15H9NO | 
|  | 4-HYDRAZINO-6-HYDROXYPYRIMIDINE |  | C4H6N4O | 
|  | 4(1H)-Pyrimidinone, 2-ethyl-6-hydroxy- (9CI) | 3709-98-6 | C6H8N2O2 | 
|  | 5-Pyrimidinecarbonitrile, 1,2-dihydro-2-oxo- (7CI,9CI) | 1753-49-7 | C5H3N3O | 
|  | 5,6-DIAMINO-2,4-DIHYDROXYPYRIMIDINE SULFATE DIHYDRATE | 63981-35-1 | C4H8N4O6S | 
|  | 2-TERT-BUTYL-4,6-DIHYDROXYPYRIMIDINE | 18378-79-5 | C8H12N2O2 | 
|  | BUTTPARK 19\09-05 | 43024-61-9 | C9H9N3O3 | 
|  | 2-AMINO-4-HYDROXY-6-ISOPROPYLPYRIMIDINE | 73576-32-6 | C7H11N3O | 
|  | 1-Pyrrolidineacetic acid, 3-hydroxy- (9CI) | 258530-57-3 | C6H11NO3 | 
|  | 1-(5-Hydroxy-2-pyrimidinyl)piperazine | 55745-85-2 | C8H12N4O | 
|  | 2-Morpholinopyrimidin-4-ol | 19810-79-8 | C8H11N3O2 | 
|  | 4-AMINO-2-DIMETHYLAMINO-6-HYDROXYPYRIMIDINE | 76750-84-0 | C6H10N4O | 
| ![2,4-Dihydroxythieno[2,3-d]pyrimidine](../cas/gif/18740-38-0.gif) | 2,4-Dihydroxythieno[2,3-d]pyrimidine | 18740-38-0 | C6H4N2O2S | 
|  | 2-AMINO-4-HYDROXYPYRIMIDINE | 674-97-5 | C4H5N3O | 
|  | 4(1H)-Pyrimidinone, 2-methyl- (8CI,9CI) | 19875-04-8 | C5H6N2O | 
|  | 4,6-DIHYDROXY-2-METHYL-PYRIMIDINE-5-CARBALDEHYDE |  | C6H6N2O3 | 
|  | Ethyl 4-amino-2-hydroxypyrimidine-5-carboxylate | 20187-46-6 | C7H9N3O3 | 
|  | 4(1H)-Pyrimidinone, 6-hydrazino- (9CI) | 29939-37-5 | C4H6N4O | 
| ![7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO-](../cas/gif/13877-55-9.gif) | 7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO- | 13877-55-9 | C5H4N4O | 
|  | 4-ETHYL-6-HYDROXY-2-METHYLPYRIMIDINE | 52421-75-7 | C7H10N2O | 
|  | 4-HYDROXY-2-PHENYL-5-PYRIMIDINECARBOXYLIC ACID | 56406-26-9 | C11H8N2O3 | 
|  | ETHYL 2-HYDROXYPYRIMIDINE-5-CARBOXYLATE |  | C7H8N2O3 | 
|  | 5-Hydroxy-1,4-dihydropyrimidin-4-one | 15837-41-9 | C4H4N2O2 | 
|  | 5-Pyrimidinol, 4,6-diamino- (9CI) | 54016-37-4 | C4H6N4O | 
|  | 2-amino-5-bromo-4-pyrimidinol | 61937-71-1 | C4H4BrN3O | 
|  | 4,5-DIAMINO-6-HYDROXYPYRIMIDINE HEMISULFATE | 102783-18-6 | C8H14N8O6S | 
| ![FURO[3,2-D]PYRIMIDINE-2,4-DIOL](../cas/gif/956034-06-3.gif) | FURO[3,2-D]PYRIMIDINE-2,4-DIOL | 956034-06-3 | C6H4N2O3 | 
|  | 4-BENZYLOXY-2-CHLORO-PYRIMIDIN-5-OL | 885952-28-3 | C11H9ClN2O2 | 
|  | 2-AMINO-4-HYDROXY-6-PHENOXYPYRIMIDINE | 313961-69-2 | C10H9N3O2 | 
|  | 2-AMINO-4-HYDROXY-6-HYDRAZINOPYRIMIDINE | 6298-85-7 | C4H7N5O | 
|  | 4-HYDROXY-2-METHYL-6-TRIFLUOROMETHYLPYRIMIDINE | 2836-44-4 | C6H5F3N2O |