Isradipine 5MG. Isradipine, CAS: 75695-93-1, MF: C19H21N3O5, Molecular Weight: 371. 4, Purity: greater than or equal to 98% by TLC, Appearance: Yellow solid, Synonym: 4-(4-Benzofurazanyl)-1, 4-dihydro-2, 6-dimethyl-3, 5-pyridinedicarboxylic acid, methyl, 1-methylester diester, Size: 5MG