H-89127243-85-0100 % similar H 8 Dihydrochloride113276-94-154 % similar H-9 Dihydrochloride116700-36-852 % similar 5-Isoquinolinesulfonic acid27655-40-939 % similar 5-Isoquinolinesulfonyl chloride84468-15-539 % similar H 7 Dihydrochloride108930-17-236 % similar 5-Nitroisoquinoline607-32-930 % similar