106-31-0 4-02-00-00802 (Beilstein Handbook Reference) 86977-44-8 Anhydrid kyseliny maselne [Czech] BRN 1099474 BUTYRIC ANHYDRIDE Butanoic acid, anhydride Butanoic anhydride Butyranhydrid [Czech] Butyric acid anhydride Butyric anhydride N Butyric anhydride [UN2739] [Corrosive] Butyryl oxide Caswell No. 132A EINECS 203-383-4 EPA Pesticide Chemical Code 077705 HSDB 5369 UN2739 n-Butyric acid anhydride n-Butyric anhydride