▁ 2 - A min opy rid ine ▁is ▁an ▁organ ic ▁comp ound ▁with ▁the ▁formula ▁H 2 NC 5 H 4 N . ▁It ▁is ▁one ▁of ▁three ▁is omer ic ▁am in opy rid ines . ▁It ▁is ▁a ▁colour less ▁solid ▁that ▁is ▁used ▁in ▁the ▁production ▁of ▁the ▁dru gs ▁pi ro xic am , ▁sul f apy rid ine , ▁ten ox ic am , ▁and ▁tri pel enn am ine . ▁ ▁It ▁is ▁produced ▁by ▁the ▁reaction ▁of ▁sod ium ▁am ide ▁with ▁py rid ine , ▁the ▁Ch ich ib ab in ▁reaction . ▁ ▁Str ucture ▁Although ▁ 2 - h ydro x yp y rid ine ▁converts ▁significantly ▁to ▁the ▁py rid one ▁t aut omer , ▁the ▁related ▁im ine ▁t aut omer ▁( H NC 5 H 4 N H ) ▁is ▁less ▁important ▁for ▁ 2 - amin opy rid ine . ▁ ▁To x icity ▁The ▁ac ute ▁to x icity ▁is ▁indicated ▁by ▁the ▁L D 5 0 ▁= ▁ 2 0 0 ▁m g / kg ▁( rat , ▁or al ). ▁ ▁References ▁ ▁External ▁links ▁ ▁M SD S ▁ ▁CD C ▁- ▁N IOS H ▁P ocket ▁Guide ▁to ▁Chem ical ▁Haz ards ▁- ▁ 2 - A min opy rid ine ▁ ▁Category : A min opy rid ines <0x0A> </s> ▁James ▁B ever ▁is ▁an ▁American ▁bi ologist . ▁He ▁special izes ▁in ▁testing ▁basic ▁e colog ical ▁and ▁evolution ary