Cas No|Cas Number|CAS Registry Number:21038-66-4 .Chemical Name|Molecular Name:pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione Formulanor:C7H5N3O2 Synonyms:pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione, 2,4-dioxo-1,2,3,4-tetrahydropyrido< pyrido<pyrimidine-2,4-dione, 1,2,3,4-tetrahydro-2,4-dioxo-pyrido<2,3-d>pyrimidine Molecular Weight:163.133
21038-66-4 Molecular Info »Cas No|Cas Number|CAS Registry Number:13877-55-9 .Chemical Name|Molecular Name:7-Hydroxypyrazolo[4,3-d]pyrimidine Formulanor:C5H4N4O Synonyms:2H-pyrazolo[4,3-d]pyrimidin-7-ol, 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro-, 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 2,6-dihydro-, 2,6-Dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one, 1,6-Dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one, 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,6-dihydro- Molecular Weight:136.111
13877-55-9 Molecular Info »Cas No|Cas Number|CAS Registry Number:5399-94-0 .Chemical Name|Molecular Name:7H-Pyrazolo[4,3-d]pyrimidin-7-one,1,6-dihydro-3-methyl- Formulanor:C6H6N4O Synonyms:3-methyl-7-oxo-6,7-dihydro-1H-pyrazolo<4,3-d>pyrimidine, 3-Methylpyrazolo<4,3-d>pyrimidin-7-on Molecular Weight:150.138
5399-94-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:18549-65-0 .Chemical Name|Molecular Name:7-DEAZAPURINE Formulanor:C6H5N3 Synonyms:pyrrolo[2,3-d]pyrimidine, 3H-pyrrolo[2,3-d]pyrimidine, pyrrolo(2,3-d)pyrimidine, 7H-Pyrrolo[2,3-d]pyrimidine, 7-Deazapurine Molecular Weight:119.124
18549-65-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:923282-64-8 .Chemical Name|Molecular Name:7-Chloro-1H-pyrazolo[4,3-d]pyrimidine Formulanor:C5H3ClN4 Synonyms:qc-5261, 7-Chloro-1H-pyrazolo[4,3-d]pyrimidine, 1H-Pyrazolo[4,3-d]pyrimidine, 7-chloro- Molecular Weight:154.557
923282-64-8 Molecular Info »Cas No|Cas Number|CAS Registry Number:72578-33-7 .Chemical Name|Molecular Name:7-(4-CHLOROPHENYL)-5,6-DIMETHYL-7H-PYRROLO[2,3-D]PYRIMIDIN-4-AMINE Formulanor:C14H13ClN4 Synonyms:7-(4-chloro-phenyl)-5,6-dimethyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamine, 9-(4-chlorophenyl)-7,8-dimethyl-2,4,9-triazabicyclo[4.3.0]nona-1,3,5,7-tetraen-5-amine, 7-(4-chlorophenyl)-5,6-dimethyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine, 4-amino-5,6-dimethyl-7-(4-chlorophenyl)pyrrolo[2,3-d]pyrimidine Molecular Weight:272.733
72578-33-7 Molecular Info »Cas No|Cas Number|CAS Registry Number:40106-59-0 .Chemical Name|Molecular Name:6,7,8,9-tetrahydro-5H-cyclohepta[4,5]thieno[1,2-c]pyrimidin-4-ylhydrazine Formulanor:C11H14N4S Synonyms:4-hydrazino-6,7,8,9-tetrahydro-5H-cyclohepta[4,5]thieno[2,3-d]pyrimidine, 1-Hydrazino-cyclohepta<b>thieno<2,3-d>pyrimidin, 1-hydrazino cyclohepta(b)thieno[2,3-d]pyrimidine, T0505-6975 Molecular Weight:234.321
40106-59-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:814918-95-1 .Chemical Name|Molecular Name:5-Bromo-4-chloro-thieno[2,3-d]pyrimidine Formulanor:C6H2BrClN2S Synonyms:5-bromo-4-chlorothieno[2,3-d]pyrimidine Molecular Weight:249.515
814918-95-1 Molecular Info »Cas No|Cas Number|CAS Registry Number:183274-54-6 .Chemical Name|Molecular Name:5-Bromo-4-chloro-2-(methylsulfanyl)-7H-pyrrolo[2,3-d]pyrimidine Formulanor:C7H5BrClN3S Synonyms: Molecular Weight:278.557
183274-54-6 Molecular Info »Cas No|Cas Number|CAS Registry Number:22276-95-5 .Chemical Name|Molecular Name:5-Bromo-4-chloro-1H-pyrrolo[2,3-d]pyrimidine Formulanor:C6H3BrClN3 Synonyms:4-CHLORO-5-BROMO-7H-PYRROLO[2,3-D]PYRIMIDINE, AMTNS041, 7-Bromo-6-chloro-7-deazapurine, 5-Bromo-4-chloro-1H-pyrrolo[2,3-d]pyrimidine, 7H-Pyrrolo[2,3-d]pyrimidine, 5-bromo-4-chloro- Molecular Weight:232.465
22276-95-5 Molecular Info »Cas No|Cas Number|CAS Registry Number:900789-14-2 .Chemical Name|Molecular Name:5-Bromo-2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine Formulanor:C6H2BrCl2N3 Synonyms:qc-9458 Molecular Weight:266.91
900789-14-2 Molecular Info »Cas No|Cas Number|CAS Registry Number:4994-89-2 .Chemical Name|Molecular Name:5,6-Dimethylthieno[2,3-d]pyrimidin-4-ylamine Formulanor:C8H9N3S Synonyms:5,6-dimethylthiopheno[2,3-d]pyrimidine-4-ylamine, 4-amino-5,6-dimethylthieno[2,3-d]pyrimidine, 5,6-Dimethyl-thieno[2,3-d]pyrimidin-4-ylamine, 5,6-Dimethylthieno(2,3-d)pyrimidin-4-amine Molecular Weight:179.242
4994-89-2 Molecular Info »Cas No|Cas Number|CAS Registry Number:21585-10-4 .Chemical Name|Molecular Name:4-Methyl-5,6-dihydrofuro[2,3-d]pyrimidin-2-amine Formulanor:C7H9N3O Synonyms:4,5-DIHYDRO-4-METHYL-6-OXO-5-PHENYL-6H-PYRAZOLO[4,5-C]ISOSELENAZOLE, 2-Amino-4-methyl-5,6-dihydrofuro<2,3-d>pyrimidin, 4,5-Pis, 4-Methyl-5,6-dihydro-furo[2,3-d]pyrimidin-2-ylamin, 2-amino-5,6-dihydro-4-methylfuro[2,3-d]pyrimidine, 4-methyl-5,6-dihydro-furo[2,3-d]pyrimidin-2-ylamine, 5,6-dihydro-4-methyl-6-oxo-5-phenyl-4H-pyrazolo<4,3-c>isoselenazole, 4,5-dihydro-4-methyl-6-oxo-5-phenyl-6H-pyrazolo<4,3-c>isoselenazole, 6H-Pyrazolo(4,3-c)isoselenazol-6-one,4,5-dihydro-4-methyl-5-phenyl, 5,6-dihydro-4-methylfuro[2,3-d]pyrimidin-2-amine Molecular Weight:151.166
21585-10-4 Molecular Info »Cas No|Cas Number|CAS Registry Number:944902-70-9 .Chemical Name|Molecular Name:4-Methoxy-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine Formulanor:C8H11N3O Synonyms:4-methoxy-5,6,7,8-tetrahydro-pyrido[4,3-d]pyrimidine, 4-methoxy-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine, 5,6,7,8-TETRAHYDRO-4-METHOXYPYRIDO[4,3-D]PYRIMIDINE Molecular Weight:165.192
944902-70-9 Molecular Info »Cas No|Cas Number|CAS Registry Number:63894-54-2 .Chemical Name|Molecular Name:4-HYDRAZINYL-5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDINE Formulanor:C8H10N4S Synonyms:MFCD01628087 Molecular Weight:194.257
63894-54-2 Molecular Info »Cas No|Cas Number|CAS Registry Number:479633-63-1 .Chemical Name|Molecular Name:4-Chloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine Formulanor:C13H10ClN3O2S Synonyms:4-Chloro-7-[(4-methylphenyl)sulfonyl]-7H-pyrrolo[2,3-d]pyrimidine, 7H-Pyrrolo[2,3-d]pyrimidine, 4-chloro-7-[(4-methylphenyl)sulfonyl]-, 4-chloro-7-(4-methylphenyl)sulfonylpyrrolo[2,3-d]pyrimidine, 4-Chloro-7-(p-toluenesulfonyl)-7H-pyrrolo[2,3-d]pyrimidine, Tofacitinib Impurity R Molecular Weight:307.755
479633-63-1 Molecular Info »Cas No|Cas Number|CAS Registry Number:137438-23-4 .Chemical Name|Molecular Name:4-CHLORO-7-METHYL-5,6,7,8-TETRAHYDRO[1]BENZOTHIENO[2,3-D]PYRIMIDINE Formulanor:C11H11ClN2S Synonyms:4-chloro-7-methyl-5,6,7,8-tetrahydrobenzo[b]thiopheno[2,3-d]pyrimidine, 4-chloro-7-methyl-5,6,7,8-tetrahydrobenzo<b>thieno<2,3-b>pyrimidine, 4-chloro-7-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine, (RS)-4-chloro-7-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine Molecular Weight:238.736
137438-23-4 Molecular Info »Cas No|Cas Number|CAS Registry Number:106691-21-8 .Chemical Name|Molecular Name:4-Chloro-6-methylthieno[2,3-d]pyrimidine Formulanor:C7H5ClN2S Synonyms:Thieno[2,3-d]pyrimidine,4-chloro-6-methyl, 4-Chloro-6-methylthieno[2,3-d]pyrimidine, 4-chloro-6-methylthieno<2,3-d>pyrimidine, RW3777, Thieno[2,3-d]pyrimidine, 4-chloro-6-methyl-, 6-Methyl-4-chlorothieno<2,3-d>pyrimidine Molecular Weight:184.646
106691-21-8 Molecular Info »Cas No|Cas Number|CAS Registry Number:1060815-92-0 .Chemical Name|Molecular Name:4-Chloro-5-iodo-2-methyl-7H-pyrrolo[2,3-d]pyrimidine Formulanor:C7H5ClIN3 Synonyms:7h-pyrrolo[2,3-d]pyrimidine,4-chloro-5-iodo-2-methyl, 7H-Pyrrolo[2,3-d]pyrimidine, 4-chloro-5-iodo-2-methyl-, 4-Chloro-5-iodo-2-methyl-1H-pyrrolo[2,3-d]pyrimidine, x8789 Molecular Weight:293.492
1060815-92-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:128277-24-7 .Chemical Name|Molecular Name:4-CHLORO-2-PYRIDIN-3-YL-5,6,7,8-TETRAHYDRO[1]BENZOTHIENO[2,3-D]PYRIMIDINE Formulanor:C15H12ClN3S Synonyms:4-chloro-2-pyridin-3-yl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine Molecular Weight:301.794
128277-24-7 Molecular Info »