Chemical Component Summary

Identifiers(2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methyl-amino]phenyl]carbonylamino]pentanedioic acid
FormulaC20 H22 N8 O5
Molecular Weight454.44
Isomeric SMILESCN(Cc1cnc2nc(N)nc(N)c2n1)c3ccc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O

Chemical Details

Formal Charge0
Atom Count55
Chiral Atom Count1
Bond Count57
Aromatic Bond Count17

Drug Info: DrugBank

DrugBank IDDB00563 
DescriptionMethotrexate is a folate derivative that inhibits several enzymes responsible for nucleotide synthesis.[A180322] This inhibition leads to suppression of inflammation as well as prevention of cell division.[A180322] Because of these effects, methotrexate is often used to treat inflammation caused by arthritis or to control cell division in neoplastic diseases such as breast cancer and non-Hodgkin's lymphoma.[A180322,L7144,L7147,L7150,L7180] Due to the toxic effects of methotrexate, it is indicated for treatment of some forms of arthritis and severe psoriasis only if first line treatment has failed or patients are intolerant of those treatments.[L7180] Methotrexate was granted FDA approval on 7 December 1953.[L7198]
  • Methotrexatum
  • Amethopterin
  • 4-amino-10-methylfolic acid
  • M√©thotrexate
  • Metotrexato
Brand Names
  • Methotrexate Injection, BP
  • Methotrexate Sodium Inj 25mg/ml
  • Trexall
  • Xatmep
  • Metoject
IndicationMethotrexate oral solution is indicated for pediatric acute lymphoblastic leukemia and pediatric polyarticular juvenile idiopathic arthritis.[L7144] Methotrexate injections for subcutaneous use are indicated for severe active rheumatoid arthritis, polyarticular juvenile idiopathic arthritis and severe, recalcitrant, disabling psoriasis.[L7147,L7150,L10457] Other formulations are indicated to treat gestational choriocarcinoma, chorioadenoma destruens, hydatiform mole, breast cancer, epidermoid cancer of the head and neck, advanced mycosis fungoides, lung cancer, and advanced non-Hodgkin's lymphoma.[L7180] It is also used in the maintenance of acute lymphocytic leukemia.[L7180] Methotrexate is also given before treatment with leucovorin to prolong relapse-free survival following surgical removal of a tumour in non-metastatic osteosarcoma.[L7180]
  • Abortifacient Agents
  • Abortifacient Agents, Nonsteroidal
  • Agents Causing Muscle Toxicity
  • Antimetabolites
  • Antineoplastic Agents
  • L04AX03
  • L01BA01
CAS number59-05-2

Drug Targets

NameTarget SequencePharmacological ActionActions
Bifunctional purine biosynthesis protein PURHMAPGQLALFSVSDKTGLVEFARNLTALGLNLVASGGTAKALRDAGLAVRD...unknowninhibitor
View More
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682