Cas No search for molecular info

Cas No|Cas Number|CAS Registry Number:623-68-7 .
Chemical Name|Molecular Name:(2E)-2-Butenoic anhydride
Formula:C8H10O3
Synonyms:Crotonic anhydride, EINECS 210-807-1, (2E)-2-Butenoic anhydride, MFCD00009286, (2E)-But-2-enoic anhydride
Molecular Weight:154.163