Synonyms:
3h-indole-7-carboxylicacid, 3-(3-oxo-1h,3h-naphtho[1,8-cd]pyran-1-ylidene)-, hydrochloride (9ci) ; 3-(3-oxo-1h,3h-naphtho[1,8-cd]pyran-1-ylidene)-3h-indole-7-carboxylic acid hydrochloride ; 1h,3h-naphtho[1,8-cd]pyran, 3h-indole-7-carboxylic acid deriv. ; 3h-indole-7-carboxylicacid, 3-(3-oxo-1h,3h-naphtho[1,8-cd]pyran-1-ylidene)-, hydrochloride (1:1)