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 Chemical NameCas No
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 »Chemical products are described in many different ways including chemical structures, generic, molecular formulas, systematic, common, and trade names. The CAS (Chemical Abstracts Service) Registry Number (Cas No or Cas Number) is a unique identifier which is a unique and unambiguous identifier for a specific substance that allows clear communication and, with the help of CAS scientists, links together all available data and research about that substance. Governmental agencies rely on CAS Registry Numbers for substance identification in regulatory applications because they are unique, easy validated, and internationally recognized.You can search the Chemical compounds's molecular information with the Cas Registry Number.You can also Search Cas Number with Chemical Name or formulas.The most complete and comprehensive Cas number lookup on Molecularinfo.com.