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Substance Name: Leucovorin calcium pentahydrate
RN: 6035-45-6
UNII: R3W57OBQ5W
InChIKey: NPPBLUASYYNAIG-ZIGBGYJWSA-L

Note

  • The active metabolite of FOLIC ACID. Leucovorin is used principally as its calcium salt as an antidote to folic acid antagonists which block the conversion of folic acid to folinic acid.

Molecular Formula

  • C20-H23-N7-O7.Ca.5H2-O

Molecular Weight

  • 601.5799
 

Names and Synonyms

Name of Substance

  • Leucovorin calcium pentahydrate

Synonyms

  • Folinic acid calcium salt pentahydrate
  • L-Glutamic acid, N-(4-(((2-amino-5-formyl-1,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl)methyl)amino)benzoyl)-, calcium salt (1:1), pentahydrate
  • UNII-R3W57OBQ5W

Systematic Name

  • Glutamic acid, N-(p-(((2-amino-5-formyl-5,6,7,8-tetrahydro-4-hydroxy-6-pteridinyl)methyl)amino)benzoyl)-, calcium salt, pentahydrate, L-

Registry Numbers

CAS Registry Number

  • 6035-45-6

FDA UNII

  • R3W57OBQ5W

Other Registry Number

  • 41927-89-3

Related Registry Number

  • 58-05-9 (Parent)

System Generated Number

  • 0006035456

Molecular Formulas

Molecular Formula

  • C20-H23-N7-O7.Ca.5H2-O

Molecular Formula Fragments

  • C20-H23-N7-O7
  • Ca
  • COMPONENT
  • H2-O

Structure Descriptors

InChI

1S/C20H23N7O7.Ca.5H2O/c21-20-25-16-15(18(32)26-20)27(9-28)12(8-23-16)7-22-11-3-1-10(2-4-11)17(31)24-13(19(33)34)5-6-14(29)30;;;;;;/h1-4,9,12-13,22H,5-8H2,(H,24,31)(H,29,30)(H,33,34)(H4,21,23,25,26,32);;5*1H2/q;+2;;;;;/p-2/t12?,13-;;;;;;/m0....../s1

InChIKey

NPPBLUASYYNAIG-ZIGBGYJWSA-L

Smiles

c1cc(ccc1C(=O)N[C@@H](CCC(=O)[O-])C(=O)[O-])NCC2CNc3c(c(=O)nc([nH]3)N)N2C=O.O.O.O.O.O.[Ca+2]