609-71-2
2-羟基烟酸
→
~85%
334708-05-3
2-羟基-5-硫吡啶-3-羧酸
4027-59-2
2-乙基-4-羧基吡唑
247582-73-6
3-吡啶羧酸,2-乙氧基-5-[(4-乙基-1-哌嗪基)磺酰]-