(2S-cis)-5-(2-(Dimethylamino)ethyl)-2,3,4,5-tetrahydro-2-(4-methoxyphenyl)-4-oxo-1,5-benzothiazepin-3-yl 4-azidobutenoate 124305-98-2 3-(4-Azidobutyryloxy)diltiazem Azidobutyryldiltiazem Butenoic acid, 4-azido-, 5-(2-(dimethylamino)ethyl)-2,3,4,5-tetrahydro-2-(4-methoxyphenyl)-4-oxo-1,5-benzothiazepin-3-yl ester, (2S-cis)-