▁c oca . ▁It ▁can ▁also ▁be ▁extracted ▁from ▁plants ▁of ▁the ▁family ▁Sol an aceae , ▁including ▁At rop a ▁bell ad onna ▁( de ad ly ▁night sh ade ), ▁D atura ▁in no x ia ▁and ▁D atura ▁str am on ium ▁( j im son ▁we ed ). ▁C us co hy gr ine ▁usually ▁occurs ▁along ▁with ▁other , ▁more ▁pot ent ▁al kal oid s ▁such ▁as ▁at rop ine ▁or ▁c oca ine . ▁ ▁C us co hy gr ine , ▁along ▁with ▁the ▁related ▁met abol ite ▁hy gr ine , ▁was ▁first ▁isolated ▁by ▁Carl ▁Lie ber mann ▁in ▁ 1 8 8 9 ▁as ▁an ▁al kal oid ▁accomp any ing ▁c oca ine ▁in ▁c oca ▁leaves ▁( also ▁known ▁as ▁C us co - le aves ). ▁ ▁C us co hy gr ine ▁is ▁an ▁oil ▁that ▁can ▁be ▁dist illed ▁without ▁decomposition ▁only ▁in ▁vac u um . ▁It ▁is ▁sol ub le ▁in ▁water . ▁It ▁also ▁forms ▁a ▁cry st all ine ▁tri h yd rate ▁which ▁mel ts ▁at ▁ 4 0 – 4 1   ° C . ▁ ▁See ▁also ▁▁ ▁C oca ▁al kal oid s ▁ ▁Di h ydro cus co hy gr ine ▁ ▁References ▁▁▁▁▁▁▁ ▁Category : P yr rol id ine ▁al kal oid s ▁Category : Al kal oid s ▁found ▁in ▁E ry th ro x yl um ▁c oca ▁Category : Al kal oid s