Calcium FolinateN-[4-[[(2-Amino-5-formyl-1,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl)methyl]amino]benzoyl]-L-glutamic Acid Calcium Salt PentahydrateFolibenFolidanLederfolatLederfolinFolinic Acid Calcium Salt PentahydrateLeucovorin Calcium Salt Pentahydrate Folaren