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Temozolomide | DNA alkylating agent

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Catalog #:

Product Description

Temozolomide is an highly orally-available, imidazotetrazine-based, monofunctional DNA alkylating agent. In vivo it spontaneously degrades and reacts with water to release a methyldiazonium cation which preferentially methylates DNA at N7 positions of guanine in guanine rich regions. The active agent also methylates N3 adenine and O6 guanine. [1]

Temozolomide, which enters the cerebrospinal fluid and does not require hepatic metabolism, demonstrates schedule-dependent antitumor activity against highly-resistant gliomas. [2] In Phase 1 clinical studies, temozolomide showed 100% p.o. bioavailability.

In L-1210 leukemia cells, temozolomide caused a dose-dependent accumulation of cells in the SL-G2-M phase. [3]

Technical information:

Chemical Formula:   C6H6N6O2
CAS #:   85622-93-1
Molecular Weight:   194.15
Purity:   >99%
Appearance:   White
Chemical Name:   4-methyl-5-oxo- 2,3,4,6,8-pentazabicyclo [4.3.0] nona-2,7,9-triene- 9-carboxamide
Solubility:   Up to 100 mM in DMSO
Synonyms:   Temozolomide, Temodar, Methazolastone

Shipping Condition: The product is shipped in a glass vial at ambient temperature.
Storage condition: For longer shelf life, store solid powder at 4oC desiccated, or store DMSO solution at -20oC.


1. Zhang et al., Temozolomide: mechanisms of action, repair and resistance. Curr. Mol. Pharmacol. 2012, 5, 102-114. Pubmed ID: 22122467
2. Friedman et al., Temozolomide and treatment of malignant glioma. Clin. Cancer Res. 2000, 6, 2585-2597. Pubmed ID: 10914698
3. Catapano et al., In vitro and in vivo methazolastone-induced DNA damage and repair in L-1210 leukemia sensitive and resistant to chloroethylnitrosoureas. Cancer Res. 1987, 47, 4884-4889. Pubmed ID: 3621181

Other Information:

Product Specification (pdf)
MSDS (pdf)
Certificate of Analysis is available upon request.

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