1564-91-6 3-((4-(Dibutylamino)butyl)carbamoyl)-4-hydroxy-8-methylcoumarin hydrochloride COUMARIN, 3-((4-(DIBUTYLAMINO)BUTYL)CARBAMOYL)-4-HYDROXY-8-METHYL-, MONOHYDROCHL Coumarin, 3-((4-(dibutylamino)butyl)carbamoyl)-4-hydroxy-8-methyl-, monohydrochloride