129120-00-9 2-Butenoic acid, 4-(6-methoxy-2-naphthalenyl)-4-oxo-, methyl ester, (E)- MMNOB Methyl (E)-4-(6-methoxy-2-naphthalenyl)-4-oxo-2-butenoate Methyl 4-(6-methoxynaphthalen-2-yl)-4-oxo-2-butenoic acid ester