▁discovered ▁that ▁" par anth rac ene " ▁was ▁an ▁is omer ic ▁modification ▁of ▁anth rac ene ▁when ▁anth rac ene ▁was ▁exposed ▁to ▁sun light . ▁Also , ▁he ▁was ▁able ▁to ▁obtain ▁the ▁cry st all ine ▁comp ounds ▁of ▁pic ric ▁acid ▁with ▁hydro car b ons ▁( ben z ene , ▁nap h th al ene , ▁etc .) ▁In ▁addition , ▁he ▁studied ▁the ▁nature ▁of ▁m ure x ide ▁and ▁recognized ▁it ▁as ▁the ▁am mon ium ▁salt ▁of ▁pur pur ic ▁acid . ▁▁ ▁He ▁is ▁cred ited ▁with ▁co ining ▁the ▁term ▁" an il ine " ▁from ▁the ▁S ansk rit ▁word ▁for ▁the ▁ind igo ▁plant . ▁In ▁ 1 8 4 1 ▁he ▁obtained ▁an il ine ▁by ▁dist illing ▁ind igo ▁with ▁ca ust ic ▁pot ash . ▁The ▁min eral ▁" f ritz sche ite " ▁in ▁named ▁in ▁his ▁honor . ▁ ▁References ▁▁▁ ▁Category : 1 8 0 8 ▁birth s ▁Category : 1 8 7 1 ▁death s ▁Category : Pe ople ▁from ▁Ne ust adt ▁in ▁Sachsen ▁Category : Pe ople ▁from ▁the ▁Kingdom ▁of ▁Sax ony ▁Category : G erman ▁ph arm ac ists ▁Category : G erman ▁chem ists ▁Category : H umb old t ▁University ▁of ▁Berlin ▁al umn i <0x0A> </s> ▁Be ix in q iao ▁Station ▁() ▁is ▁a ▁station ▁on ▁Line ▁ 5 ▁of ▁the ▁Be ij ing ▁Sub way . ▁It ▁is ▁located ▁in ▁Be ix in q