Sub Group: Unlabeled Standards Catalog Number: 4791 CAS Number: 152-72-7 Molecular Weight: 353.33 Synonyms: (4-Hydroxy-3-[1-(4-Nitrophenyl)-3-oxobutyl]-2H-1-benzopyran-2-oneAcenocoumarinNicoumaloneG-23350SinthromeSintrom)