3727427 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3727427 > 2 > ChemIDplus > 000514761 > 514-76-1 Astacin beta,beta-Carotene-3,3',4,4'-tetrone > 514-76-1 > 000514761 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=000514761 $$$$