Cas No search for molecular info

Cas No|Cas Number|CAS Registry Number:21565-82-2 .
Chemical Name|Molecular Name:4-Pentynoic Acid Methyl Ester
Formulanor:C6H8O2
Synonyms:4-Pentynoic Acid Methyl Ester, Methyl pent-4-ynoate
Molecular Weight:112.127