4361-00-6
3-氧代-3H-苯并吡喃-2-羧酸
→
71942-38-6
5,6-苯并香豆素-3-羰酰氯
708-06-5
2-羟基-1-萘甲醛
734-88-3
3-Carboxy-2H-naphtho(2,1-B)pyran-2-one, ethyl ester