64047-64-9 Ammonium, (3-(1,2-dimethyl-1,2,3,4-tetrahydroisoquinolinio)propyl)trimethyl-, dibromide IN 321 ISOQUINOLINIUM, 1,2,3,4-TETRAHYDRO-1,2-DIMETHYL-2-(3-(TRIMETHYLAMMONIO)PROPYL)-, Isoquinolinium, 1,2,3,4-tetrahydro-1,2-dimethyl-2-(3-(trimethylammonio)propyl)-, dibromide