CAS号查询库

CAS号是公开的化学物质信息的最权威的集合。CAS号涵盖从1957年至今的科学文献中确定的物质，其他物质可追溯到20世纪初。它也称CAS编号(CAS Registry Number，或称CAS Number，CAS Rn，CAS #)，又称CAS登录号或CAS登记号码，是某种物质(化合物、高分子材料、生物序列(Biological sequences)、混合物或合金)的唯一的数字识别号码。美国化学会的下设组织化学文摘社(Chemical Abstracts Service，简称CAS)负责为每一种出现在文献中的物质分配一个CAS编号，其目的是为了避免化学物质有多种名称的麻烦，使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS编号检索。

名称	英文名	物理化学性质	CAS号	分子式
N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-2-(2-methoxyphenoxy)acetamide	N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-2-(2-methoxyphenoxy)acetamide	分子量：359.4 密度：N/A 沸点：N/A 熔点：N/A	898633-93-7	C₁₇H₁₄FN₃O₃S
N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-2-phenoxyacetamide	N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-2-phenoxyacetamide	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	898633-95-9	C₁₆H₁₂FN₃O₂S
2-(4-bromophenoxy)-N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]acetamide	2-(4-bromophenoxy)-N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]acetamide	分子量：408.2 密度：N/A 沸点：N/A 熔点：N/A	898633-97-1	C₁₆H₁₁BrFN₃O₂S
N-[2-(4-chlorophenyl)-2-(morpholin-4-yl)ethyl]-4-fluorobenzamide	N-[2-(4-chlorophenyl)-2-(morpholin-4-yl)ethyl]-4-fluorobenzamide	分子量：362.8 密度：N/A 沸点：N/A 熔点：N/A	898634-88-3	C₁₉H₂₀ClFN₂O₂
N-(4-methoxybenzyl)-5-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)-1,2-oxazole-3-carboxamide	N-(4-methoxybenzyl)-5-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)-1,2-oxazole-3-carboxamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	898635-32-0	C₂₁H₂₀N₂O₄
4-methyl-N-[3-(propylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-[3-(propylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-1,2,3-thiadiazole-5-carboxamide	分子量：364.5 密度：N/A 沸点：N/A 熔点：N/A	898635-39-7	C₁₆H₂₀N₄O₂S₂
N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-3,4,5-trimethoxybenzamide	N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-3,4,5-trimethoxybenzamide	分子量：389.4 密度：N/A 沸点：N/A 熔点：N/A	898635-49-9	C₁₈H₁₆FN₃O₄S
N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-3-methoxybenzamide	N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]-3-methoxybenzamide	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	898635-55-7	C₁₆H₁₂FN₃O₂S
1-(4-methylphenyl)-N-[5-(methylsulfanyl)-1,3,4-thiadiazol-2-yl]-4-oxo-1,4-dihydropyridazine-3-carboxamide	1-(4-methylphenyl)-N-[5-(methylsulfanyl)-1,3,4-thiadiazol-2-yl]-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：359.4 密度：N/A 沸点：N/A 熔点：N/A	898635-77-3	C₁₅H₁₃N₅O₂S₂
4-methyl-N-{3-[(pyridin-3-ylmethyl)carbamoyl]-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl}-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-{3-[(pyridin-3-ylmethyl)carbamoyl]-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl}-1,2,3-thiadiazole-5-carboxamide	分子量：399.5 密度：N/A 沸点：N/A 熔点：N/A	898635-79-5	C₁₈H₁₇N₅O₂S₂
Ethyl 2-{[(4-methyl-1,2,3-thiadiazol-5-yl)carbonyl]amino}-1,3-benzothiazole-6-carboxylate	Ethyl 2-{[(4-methyl-1,2,3-thiadiazol-5-yl)carbonyl]amino}-1,3-benzothiazole-6-carboxylate	分子量：348.4 密度：N/A 沸点：N/A 熔点：N/A	898635-82-0	C₁₄H₁₂N₄O₃S₂
N-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：304.4 密度：N/A 沸点：N/A 熔点：N/A	898605-34-0	C₁₃H₁₂N₄OS₂
N-(3-carbamoyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-1-(4-chlorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	N-(3-carbamoyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-1-(4-chlorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：428.9 密度：N/A 沸点：N/A 熔点：N/A	898605-40-8	C₂₀H₁₇ClN₄O₃S
4-methyl-N-{3-[(2-phenylethyl)carbamoyl]-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl}-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-{3-[(2-phenylethyl)carbamoyl]-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl}-1,2,3-thiadiazole-5-carboxamide	分子量：412.5 密度：N/A 沸点：N/A 熔点：N/A	898605-41-9	C₂₀H₂₀N₄O₂S₂
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	分子量：429.9 密度：N/A 沸点：N/A 熔点：N/A	879594-96-4	C₂₂H₂₀ClNO₄S
(2E)-N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-(4-methoxyphenyl)prop-2-enamide	(2E)-N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-(4-methoxyphenyl)prop-2-enamide	分子量：486.0 密度：N/A 沸点：N/A 熔点：N/A	898605-45-3	C₂₅H₂₄ClNO₅S
(2E)-N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-phenylprop-2-enamide	(2E)-N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-phenylprop-2-enamide	分子量：456.0 密度：N/A 沸点：N/A 熔点：N/A	898605-47-5	C₂₄H₂₂ClNO₄S
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methoxybenzamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methoxybenzamide	分子量：459.9 密度：N/A 沸点：N/A 熔点：N/A	879762-73-9	C₂₃H₂₂ClNO₅S
1-(4-methoxyphenyl)-4-oxo-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]-1,4-dihydropyridazine-3-carboxamide	1-(4-methoxyphenyl)-4-oxo-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]-1,4-dihydropyridazine-3-carboxamide	分子量：483.5 密度：N/A 沸点：N/A 熔点：N/A	898605-50-0	C₂₁H₁₇N₅O₅S₂
1-(3-chlorophenyl)-4-oxo-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]-1,4-dihydropyridazine-3-carboxamide	1-(3-chlorophenyl)-4-oxo-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]-1,4-dihydropyridazine-3-carboxamide	分子量：487.9 密度：N/A 沸点：N/A 熔点：N/A	898605-51-1	C₂₀H₁₄ClN₅O₄S₂
4-(4-Methoxy-2,5-dimethylphenyl)-5-methylisoxazole	4-(4-Methoxy-2,5-dimethylphenyl)-5-methylisoxazole	分子量：217.26 密度：N/A 沸点：N/A 熔点：N/A	246023-55-2	C₁₃H₁₅NO₂
4-ethoxy-N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]benzamide	4-ethoxy-N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]benzamide	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	898605-72-6	C₁₇H₁₄FN₃O₂S
3-ethoxy-N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]benzamide	3-ethoxy-N-[3-(4-fluorophenyl)-1,2,4-thiadiazol-5-yl]benzamide	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	898605-83-9	C₁₇H₁₄FN₃O₂S
N-(5-{[(2-fluorophenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-(5-{[(2-fluorophenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：367.5 密度：N/A 沸点：N/A 熔点：N/A	898605-89-5	C₁₃H₁₀FN₅OS₃
4-methyl-N-[3-(prop-2-en-1-ylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-[3-(prop-2-en-1-ylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-1,2,3-thiadiazole-5-carboxamide	分子量：362.5 密度：N/A 沸点：N/A 熔点：N/A	898605-92-0	C₁₆H₁₈N₄O₂S₂
4-methyl-N-[3-(methylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-[3-(methylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-1,2,3-thiadiazole-5-carboxamide	分子量：336.4 密度：N/A 沸点：N/A 熔点：N/A	898605-95-3	C₁₄H₁₆N₄O₂S₂
N-{5-[(2-chlorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-{5-[(2-chlorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：383.9 密度：N/A 沸点：N/A 熔点：N/A	898605-99-7	C₁₃H₁₀ClN₅OS₃
N-{3-[(3-methoxypropyl)carbamoyl]-4,5,6,7-tetrahydro-1-benzothiophen-2-yl}-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-{3-[(3-methoxypropyl)carbamoyl]-4,5,6,7-tetrahydro-1-benzothiophen-2-yl}-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	898606-01-4	C₁₇H₂₂N₄O₃S₂
4-methyl-N-[5-(propan-2-yl)-1,3,4-thiadiazol-2-yl]-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-[5-(propan-2-yl)-1,3,4-thiadiazol-2-yl]-1,2,3-thiadiazole-5-carboxamide	分子量：269.4 密度：N/A 沸点：N/A 熔点：N/A	898606-03-6	C₉H₁₁N₅OS₂
Methyl 2-{[(4-methyl-1,2,3-thiadiazol-5-yl)carbonyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate	Methyl 2-{[(4-methyl-1,2,3-thiadiazol-5-yl)carbonyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate	分子量：337.4 密度：N/A 沸点：N/A 熔点：N/A	898606-10-5	C₁₄H₁₅N₃O₃S₂
4-methyl-N-(5-{[(2-methylphenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-(5-{[(2-methylphenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-1,2,3-thiadiazole-5-carboxamide	分子量：363.5 密度：N/A 沸点：N/A 熔点：N/A	898606-15-0	C₁₄H₁₃N₅OS₃
4-methyl-N-{5-[(2-oxo-2-phenylethyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-{5-[(2-oxo-2-phenylethyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-1,2,3-thiadiazole-5-carboxamide	分子量：377.5 密度：N/A 沸点：N/A 熔点：N/A	898606-20-7	C₁₄H₁₁N₅O₂S₃
N-(5-{[(4-chlorophenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-(5-{[(4-chlorophenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：383.9 密度：N/A 沸点：N/A 熔点：N/A	898606-23-0	C₁₃H₁₀ClN₅OS₃
4-methyl-N-(5-{[(3-methylphenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-(5-{[(3-methylphenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-yl)-1,2,3-thiadiazole-5-carboxamide	分子量：363.5 密度：N/A 沸点：N/A 熔点：N/A	898606-26-3	C₁₄H₁₃N₅OS₃
N-[4-(4-ethoxyphenyl)-1,2,5-oxadiazol-3-yl]-3-methyl-1-benzofuran-2-carboxamide	N-[4-(4-ethoxyphenyl)-1,2,5-oxadiazol-3-yl]-3-methyl-1-benzofuran-2-carboxamide	分子量：363.4 密度：N/A 沸点：N/A 熔点：N/A	898606-29-6	C₂₀H₁₇N₃O₄
3-methyl-N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}-1-benzofuran-2-carboxamide	3-methyl-N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}-1-benzofuran-2-carboxamide	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	898606-43-4	C₂₁H₁₉N₃O₄
N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	898606-53-6	C₂₀H₁₉N₃O₅
3-methyl-N-[4-(4-propoxyphenyl)-1,2,5-oxadiazol-3-yl]-1-benzofuran-2-carboxamide	3-methyl-N-[4-(4-propoxyphenyl)-1,2,5-oxadiazol-3-yl]-1-benzofuran-2-carboxamide	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	898606-57-0	C₂₁H₁₉N₃O₄
N-[4-(4-propoxyphenyl)-1,2,5-oxadiazol-3-yl]-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-[4-(4-propoxyphenyl)-1,2,5-oxadiazol-3-yl]-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	898606-59-2	C₂₀H₁₉N₃O₅
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-[4-(propan-2-yl)phenoxy]acetamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-[4-(propan-2-yl)phenoxy]acetamide	分子量：470.4 密度：N/A 沸点：N/A 熔点：N/A	898606-68-3	C₂₀H₂₄BrNO₅S
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-methylbenzamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-methylbenzamide	分子量：412.3 密度：N/A 沸点：N/A 熔点：N/A	898606-70-7	C₁₇H₁₈BrNO₄S
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(4-methylphenoxy)acetamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(4-methylphenoxy)acetamide	分子量：442.3 密度：N/A 沸点：N/A 熔点：N/A	898606-71-8	C₁₈H₂₀BrNO₅S
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(2-methylphenoxy)acetamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(2-methylphenoxy)acetamide	分子量：442.3 密度：N/A 沸点：N/A 熔点：N/A	898606-72-9	C₁₈H₂₀BrNO₅S
N-[(5-bromofuran-2-yl)methyl]-2-(4-tert-butylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	N-[(5-bromofuran-2-yl)methyl]-2-(4-tert-butylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	分子量：484.4 密度：N/A 沸点：N/A 熔点：N/A	898606-76-3	C₂₁H₂₆BrNO₅S
3-chloro-N-[4-(3,4-dimethoxyphenyl)-1,2,5-oxadiazol-3-yl]-1-benzothiophene-2-carboxamide	3-chloro-N-[4-(3,4-dimethoxyphenyl)-1,2,5-oxadiazol-3-yl]-1-benzothiophene-2-carboxamide	分子量：415.9 密度：N/A 沸点：N/A 熔点：N/A	898606-77-4	C₁₉H₁₄ClN₃O₄S
4-methyl-N-{5-[(4-methylbenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-1,2,3-thiadiazole-5-carboxamide	4-methyl-N-{5-[(4-methylbenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-1,2,3-thiadiazole-5-carboxamide	分子量：363.5 密度：N/A 沸点：N/A 熔点：N/A	898606-80-9	C₁₄H₁₃N₅OS₃
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-ethylbutanamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-ethylbutanamide	分子量：424.0 密度：N/A 沸点：N/A 熔点：N/A	898606-85-4	C₂₁H₂₆ClNO₄S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-ethoxy-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-ethoxy-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}benzamide	分子量：457.5 密度：N/A 沸点：N/A 熔点：N/A	898606-87-6	C₂₄H₂₄FNO₅S
4-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}benzamide	4-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}benzamide	分子量：447.9 密度：N/A 沸点：N/A 熔点：N/A	879774-60-4	C₂₂H₁₉ClFNO₄S
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：488.0 密度：N/A 沸点：N/A 熔点：N/A	898606-94-5	C₂₄H₂₂ClNO₆S