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  • #LGM Pharma offers this active ingredient but not the finished dosage forms.

Product Details:

  • CAS No: 2353-33-5
  • AHFC code:
  • Synonyms: 2-Deoxyazacytidine, 2-Desoxy-5-azacytidine, 4-Amino-1-(2-deoxy-beta-D-erythro-pentofuranosyl)-s-triazin-2(1H)-one, 5-Aza-2'-deoxycytidine, 5-Aza-deoxycytidine, 5-Azadeoxycytidine, BRN 0617982, CCRIS 8227, Dac, Dacogen, Decitabine, EINECS 219-089-4, JNJ 30979754, JNJ-30979754, NSC 127716, UNII-776B62CQ27
  • ATC Code: L01BC08
  • Chemical Formula: C8-H12-N4-O4
  • Molecular Weight: 228.2068
  • Assay/Purity: Typically NLT 98%
  • DrugBank: DB01262
  • SMILES: c1nc(nc(=O)n1[C,H]2C[C,,H]([C,H](O2)CO)O)N
  • InChl: 1S/C8H12N4O4/c9-7-10-3-12(8(15)11-7)6-1-4(14)5(2-13)16-6/h3-6,13-14H,1-2H2,(H2,9,11,15)/t4-,5+,6+/m0/s1
  • PubChem: 451668
  • IUPAC: 4-amino-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,2-dihydro-1,3,5-triazin-2-one

Additional Details

Indication:
For treatment of patients with myelodysplastic syndromes (MDS) including previously treated and untreated, de novo and secondary MDS of all French-American-British subtypes (refractory anemia, refractory anemia with ringed sideroblasts, refractory anemia with excess blasts, refractory anemia with excess blasts in transformation, and chronic myelomonocytic leukemia) and intermediate-1, intermediate-2, and high-risk International Prognostic Scoring System groups (scores ≥0.5).
Pharmacodynamics:
Decitabine is an analogue of the natural nucleoside 2’-deoxycytidine. It functions in the same way as 5-Azacytidine. The antineoplastic activity of this drug is dependent on its intracellular conversion to its 5′-triphosphate metabolite.
Mode of Action:
Decitabine is believed to exert its antineoplastic effects following its conversion to decitabine triphosphate, where the drug directly incorporates into DNA and inhibits DNA methyltransferase, the enzyme that is responsible for methylating newly synthesized DNA in mammalian cells. This results in hypomethylation of DNA and cellular differentiation or apoptosis. Decitabine inhibits DNA methylation in vitro, which is achieved at concentrations that do not cause major suppression of DNA synthesis. Decitabine-induced hypomethylation in neoplastic cells may restore normal function to genes that are critical for the control of cellular differentiation and proliferation. In rapidly dividing cells, the cytotoxicity of decitabine may also be attributed to the formation of covalent adducts between DNA methyltransferase and decitabine that has been incorporated into DNA. Non-proliferating cells are relatively insensitive to decitabine. Decitabine is cell cycle specific and acts peripherally in the S phase of the cell cycle. It does not inhibit the progression of cells from the G1 to S phase.
Metabolism:
The exact route of elimination and metabolic fate of decitabine is not known in humans. One of the pathways of elimination of decitabine appears to be deamination by cytidine deaminase found principally in the liver but also in granulocytes, intestinal epithelium and whole blood.
Toxicity:
There is no known antidote for overdosage with decitabine. Higher doses are associated with increased myelosuppression including prolonged neutropenia and thrombocytopenia.
General Reference:
Appleton K, Mackay HJ, Judson I, Plumb JA, McCormick C, Strathdee G, Lee C, Barrett S, Reade S, Jadayel D, Tang A, Bellenger K, Mackay L, Setanoians A, Schatzlein A, Twelves C, Kaye SB, Brown R: Phase I and pharmacodynamic trial of the DNA methyltransferase inhibitor decitabine and carboplatin in solid tumors. J Clin Oncol. 2007 Oct 10;25(29):4603-9. PubmedWijermans PW, Ruter B, Baer MR, Slack JL, Hussain SI, Lubbert M: Efficacy of decitabine in the treatment of patients with chronic myelomonocytic leukemia (CMML). Leuk Res. 2007 Sep 17;. PubmedDaskalakis M, Blagitko-Dorfs N, Hackanson B: Decitabine. Recent Results Cancer Res. 2010;184:131-57. PubmedSaba HI, Wijermans PW: Decitabine in myelodysplastic syndromes. Semin Hematol. 2005 Jul;42(3 Suppl 2):S23-31. PubmedJabbour E, Issa JP, Garcia-Manero G, Kantarjian H: Evolution of decitabine development: accomplishments, ongoing investigations, and future strategies. Cancer. 2008 Jun;112(11):2341-51. PubmedStresemann C, Lyko F: Modes of action of the DNA methyltransferase inhibitors azacytidine and decitabine. Int J Cancer. 2008 Jul 1;123(1):8-13. PubmedOki Y, Aoki E, Issa JP: Decitabine—bedside to bench. Crit Rev Oncol Hematol. 2007 Feb;61(2):140-52. Epub 2006 Oct 4. Pubmed
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