Temozolomide Impurity 13 CAS 100191-43-3
| CAS No. | 100191-43-3 |
| Molecular Formula | C4H8N4O2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Temozolomide Impurity 13 (CAS 100191-43-3) is a certified pharmaceutical impurity reference standard with the molecular formula C4H8N4O2CH2O2 and a molecular weight of 190.16 g/mol.
Based on its molecular formula C4H8N4O2CH2O2, Temozolomide Impurity 13 contains a carbohydrate-derived structure, an amide group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 190.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Temozolomide Impurity 13 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4H8N4O2 CH2O2 |
| Molecular Weight | 190.16 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 4 |
Related Temozolomide Standards
- Temozolomide Impurity 14 (CAS 100-34-5)
- Temozolomide Impurity 15 (CAS 100607-08-7)
- Temozolomide Impurity 22 (CAS 1114912-01-4)
- Temozolomide EP Impurity B (CAS 113942-30-6)
- Temozolomide EP Impurity C (CAS 114601-31-9)
- Temozolomide Metabolite-MTIC-d3 (CAS 1185242-69-6)
- Temozolomide Metabolite-MTIC (CAS 1232679-46-7)
- Temozolomide Impurity 26 (CAS 13114-72-2)
Recommended Standards
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- Mevastatin Hydroxy Acid Sodium Salt (CAS 99782-89-5)
- 9,10-Anthracenedione, 1,4-bis[(4-butylphenyl)amino]-5,8-dihydroxy- (CAS 28198-05-2)
- (R)-2-(3-Pyrrolidinyl)-2-propanol (CAS 1245649-03-9)
- 5-Amino-2-chloro-N-(4-propoxyphenyl)benzamide (CAS 1455622-52-2)
- 4-(5-(Chloromethyl)-1,2,4-oxadiazol-3-yl)-N-cyclohexyl-N-methylbenzamide (CAS 1119449-62-5)
- 4-Nitrophenyl 4-guanidinobenzoate (CAS 21658-26-4)
- Ephrin-A2-Selective YSA-Peptide (CAS 532441-10-4)
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