High Quality Best Price of Temozolomide CAS 85622-93-1 Anti-Cancers Powder
Temozolomide: 4-Methyl-5-oxo-2,3,4,6,8-pentazabicyclo[4.3.0]nona-2,7,9-triene-9-carboxamide
Molecular Structure:
Molecular Formula: C6H6N6O2
Molecular Weight: 194.15
CAS No.: 85622-93-1
Uses: Antitumor Drug
Purity: >99%
Temozolomide is a chemotherapy drug used to treat certain types of brain tumours called glioblastoma multiforme or anaplastic astrocytoma.
Temozolomide COA
Test items |
Requirements |
Results |
Description |
A White or off-white crystalline powder; odorless; tasted bitter. |
Complies |
Solubility |
Slightly soluble in water, very slightly soluble in dehydrated alcohol, soluble in DMF and very soluble DMSO. |
Complies |
Identification |
|
A. IR |
A: Conform to reference standard |
Conforms |
B. Chemical Property |
B: Dissolve 0.1g the sample with 10ml water, add 5ml dinitro-phenyl-hydrazine, should have marron precipitate. |
Positive |
C. HPLC |
C: The retention time of the major peak in the chromatogram of the assay preparation corresponds to that in the chromatogram of the standard preparation |
Conforms |
Loss on drying |
≤ 1.0%. |
0.21% |
Residue on ignition |
≤ 0.1%. |
0.07% |
Heavy metals |
≤ 0.002%. |
Complies |
Chloride |
≤ 0.002%. |
Complies |
Impurities by HPLC
Any impurity(Max)
Total impurities |
≤ 0.1%.
≤ 0.3%. |
0.042%
0.08% |
Residual solvents
Ethyl acetate
Alcohol
DMSO |
≤ 0.5%.
≤ 0.5%.
≤ 0.5%. |
Complies
Complies
Complies |
Assay (HPLC) |
98.5%~102.0% |
99.80% |
Temozolomide Description
Temozolomide is an antitumor, antiangiogenic compound that has been shown to work by alkylating DNA, typically through addition of a methyl group to guanine in genomic DNA. The efficacy of this compound is dependent on its ability to methylate the DNA, thus triggering apoptosis;
however, some cells are able to repair this damage via the enzymes O-6-methylguanine-DNA methyltransferase (MGMT). As a consequence, temozolomide is far more efficacious in tumor cells that have silenced this repair enzyme. Research has also been conducted to determine whether MGMT inhibitors such as O-6-benzylguanine might help to increase the efficacy of temozolomide. Furthermore, temozolomide has been implicated in causing arrest at the G2/M cell cycle checkpoint, which mightalso play a role in its cytotoxicity.