(3Z)-4-methoxybut-3-en-2-one 3-buten-2-one, 4-methoxy-, (3Z)- 4-methoxy-3-buten-2-one 4652-27-1 InChI=1/C5H8O2/c1-5(6)3-4-7-2/h3-4H,1-2H3/b4-3