Temozolomide

Temozolomide: alkylating agent (imidazotetrazine).

Temozolomide testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.

Structure

2D structure of Temozolomide

Temozolomide: 2D structure drawn from the PubChem record (CID 5394).

Compound data

CAS number

85622-93-1

Formula

C6H6N6O2

Molecular weight

194.15 g/mol

Type

Alkylating agent (imidazotetrazine)

Structure and names

Identity: Temozolomide

IUPAC name: 3-methyl-4-oxoimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamide

How Vanguard tests Temozolomide

Method for the $250 identity, purity and quantity test: HPLC-UV purity and assay, LC-MS identity, against a reference standard, with results in 3 to 5 business days.

The USP monograph covers identity by infrared spectroscopy and HPLC retention time, assay by HPLC, organic impurities by HPLC, residue on ignition, and water content. Full testing to the USP Temozolomide monograph is available and quoted.

What's reported

  • Purity, as percent of total peak area
  • Quantity, against the label claim
  • Identity, reported as match or no match against the reference standard
  • With monograph testing (quoted): the monograph’s tests against its limits

Tests and prices

$250

Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.

$200

Chromatographic purity on bulk powder. 50 mg.

Add-on tests

Add-on testPrice
Identity and impurities
FTIR identity$90
CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur)$125
Chiral purity (where a chiral method exists; new methods quoted)$250
Water, solvents and salt form
Water content by Karl Fischer$60
Residual solvents$150
Counterions: chloride, acetate and TFA$70
Assay
Assay, % w/w (with raw powder purity; $250 together)+$50
Metals and conformity
Heavy metals: arsenic, cadmium, chromium, mercury and lead$150
Conformity: purity and quantity on more units from the same lot$100 per extra unit
Microbiology (injectables)
Endotoxin$210
Sterility or bioburden$150
Container closure integrity (CCI)$50
Screening
Fentanyl screen$50

10% off for 10 or more samples.

Need something else? Other tests are available on request.

Sample amount and turnaround

Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.

Salts, forms and compendial references

  • Temozolomide (CAS 85622-93-1)
  • Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Temozolomide testing

Is the $250 test the same as USP monograph testing?

No. The $250 test covers identity, purity and quantity by HPLC-UV for purity and quantity and LC-MS for identity. Full testing to the USP Temozolomide monograph is available and quoted.

Is temozolomide stable in solution?

Temozolomide is stable in acid but breaks down quickly at neutral and basic pH to MTIC and then to an aminoimidazole carboxamide product. Samples are prepared in acidic diluent and analyzed promptly.

What form does temozolomide usually arrive in?

Usually as a white to light tan powder or as capsules. Capsule contents are extracted and the result is reported per capsule or as percent of label claim.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/5394

Identity facts from the USP monograph header for this compound.

Order

Start an order online, or send the compound name and the tests you need for a quote.