CAS Number Index

A CAS Registry Number,also referred to as CASRN or CAS Number, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature (currently including all substances described from 1957 through the present, plus some substances from the early or mid 1900s), including organic and inorganiccompounds, minerals, isotopes, alloys and nonstructurable materials (UVCBs, of unknown, variable composition, or biological origin).The registry maintained by CAS is an authoritative collection of disclosed chemical substance information. It currently identifies more than 144 million unique organic and inorganic substances and 67 million protein and DNA sequences,plus additional information about each substance. It is updated with around 15,000 additional new substances daily.（information coming from wikipedia.org)

Name CAS Number
Ethyl 4-(2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)benzoate 877638-30-7
Methyl 4-(2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)benzoate 877638-32-9
N-(3-acetamidophenyl)-2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 877638-34-1
Ethyl 2-(2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 877638-38-5
ethyl 2-(2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate 877638-39-6
3-((4-methylbenzyl)thio)-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 877638-48-7
N-(4-chlorophenyl)-2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 877638-53-4
N-(4-bromophenyl)-2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 877638-54-5
N-(3-chloro-4-methylphenyl)-2-((7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 877638-56-7
Diethyl 3-methyl-5-(2-((5-methyl-7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)thiophene-2,4-dicarboxylate 877639-53-7
Methyl 2-((5-methyl-7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetate 891118-49-3
Ethyl 2-((5-methyl-7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetate 891118-57-3
Ethyl 2-((5-methyl-7-oxo-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)propanoate 891118-65-3
3-((2-(2,6-dimethylmorpholino)-2-oxoethyl)thio)-5-methyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 877639-88-8
3-((2-(3-(4-bromophenyl)-5-(4-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl)-2-oxoethyl)thio)-5-methyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 891120-11-9
Ethyl 4-(2-((7-oxo-5-phenyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetyl)piperazine-1-carboxylate 894995-41-6
3-((3-fluorobenzyl)thio)-5-phenyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 895002-77-4
3-((3,4-dichlorobenzyl)thio)-5-phenyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 897616-12-5
ethyl 3-(difluoromethyl)-5-methoxy-6-oxo-1H-pyridine-2-carboxylate 1805483-63-9
N-(4-butylphenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895003-65-3
N-(3,4-dimethoxyphenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895004-29-2
N-(benzo[d][1,3]dioxol-5-yl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891122-92-2
Ethyl 2-(2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)benzoate 895004-37-2
N-(4-acetylphenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895004-61-2
N-(4-acetamidophenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895004-77-0
N-cyclopentyl-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891123-24-3
N-cyclohexyl-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891123-32-3
2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)-N-phenethylacetamide 895005-25-1
N-(3,4-dimethoxyphenethyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 887213-99-2
2-[(7-keto-5-propyl-1H-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio]-N-thiazol-2-yl-acetamide 891123-56-1
N-(5-ethyl-1,3,4-thiadiazol-2-yl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895005-33-1
N-(4-methylbenzyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895005-48-8
4-(2-((7-Oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamido)benzamide 895005-55-7
3-((3-methylbenzyl)thio)-5-propyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 891124-20-2
3-((2,5-dimethylbenzyl)thio)-5-propyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 891124-28-0
Ethyl 2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetate 891124-91-7
Ethyl 2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)butanoate 895005-69-3
Methyl 2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)propanoate 891125-15-8
3-((2-(4-methoxyphenyl)-2-oxoethyl)thio)-5-propyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 891125-39-6
N-methyl-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891125-55-6
N-isopropyl-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891125-63-6
3-((2-(2,6-dimethylmorpholino)-2-oxoethyl)thio)-5-propyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one 891125-87-4
N-(3-fluorophenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891126-03-7
N-(4-fluorophenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891126-11-7
N-(4-bromophenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891126-35-5
N-(2,4-difluorophenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891126-43-5
N-(3-chloro-4-methylphenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 891126-59-3
N-(5-chloro-2-methoxyphenyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895005-97-7
2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)-N-(3-(trifluoromethyl)phenyl)acetamide 895006-11-8
N-(2-chlorobenzyl)-2-((7-oxo-5-propyl-7,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl)thio)acetamide 895006-46-9

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