Exact Mass: 427.14917660000003
Exact Mass Matches: 427.14917660000003
Found 5 metabolites which its exact mass value is equals to given mass value 427.14917660000003,
within given mass tolerance error 1.6E-6 dalton. Try search metabolite list with more accurate mass tolerance error
3.2E-7 dalton.
Pemetrexed
C20H21N5O6 (427.14917660000003)
Pemetrexed is only found in individuals that have used or taken this drug. It is a chemotherapy drug manufactured and marketed by Eli Lilly and Company. Its indications are the treatment of pleural mesothelioma as well as non-small cell lung cancer.Pemetrexed is an antifolate containing the pyrrolopyrimidine-based nucleus that exerts its antineoplastic activity by disrupting folate-dependent metabolic processes essential for cell replication. In vitro studies have shown that pemetrexed inhibits thymidylate synthase (TS), dihydrofolate reductase (DHFR), and glycinamide ribonucleotide formyltransferase (GARFT), all folate-dependent enzymes involved in the de novo biosynthesis of thymidine and purine nucleotides. Pemetrexed is transported into cells by both the reduced folate carrier and membrane folate binding protein transport systems. Once in the cell, pemetrexed is converted to polyglutamate forms by the enzyme folylpolyglutamate synthetase. The polyglutamate forms are retained in cells and are inhibitors of TS and GARFT. Polyglutamation is a time- and concentration-dependent process that occurs in tumor cells and, to a lesser extent, in normal tissues. Polyglutamated metabolites have an increased intracellular half-life resulting in prolonged drug action in malignant cells.
[3H]Pemetrexed
C20H21N5O6 (427.14917660000003)
Pemetrexed
C20H21N5O6 (427.14917660000003)
L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents > L01B - Antimetabolites > L01BA - Folic acid analogues C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C272 - Antimetabolite D004791 - Enzyme Inhibitors > D019384 - Nucleic Acid Synthesis Inhibitors C471 - Enzyme Inhibitor > C2021 - Thymidylate Synthase Inhibitor D004791 - Enzyme Inhibitors > D005493 - Folic Acid Antagonists D000970 - Antineoplastic Agents
