51 rows a cas registry number,also referred to as casrn or cas number, is a unique. A cas number is a numerical designation for chemicals that is maintained by the chemical abstracts service (cas) of the american chemical society. Please follow the steps below to conduct your search: Search chemicals by name, molecular formula, structure, and other identifiers. 1978 Kenner Star Wars SW 20 BackE R5D4 CAS 75 (10173220) cas no . Search for species data by cas registry number. Cas registry ® is the most authoritative collection of disclosed chemical substance information. A cas number is a numerical designation for chemicals that is maintained by the chemical abstracts service (cas) of the american chemical society. Select the desired units for thermodynamic. Cas registry numbers® or casrns®, commonly referred to as cas numbers, are unique numerical identifiers assigned to chemicals by the chemicals abstract service (cas: C 6 h 7 no; 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 Re...
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