13148-05-5
2-氧-4-(三苯基膦)丁酸乙酯
+
555-16-8
对硝基苯甲醛
→
76842-84-7
ethyl 5-(4-nitrophenyl)-3-oxopent-4-enoate
104858-58-4
65043-08-5
ethyl 4-diethoxyphosphoryl-3-oxobutanoate