Temozolomide Impurity 16 CAS 20344-79-0
| CAS No. | 20344-79-0 |
| Molecular Formula | C4H4N4 |
| Molecular Weight | 108.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Temozolomide Impurity 16 is closely related to a nitrile group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Temozolomide Impurity 16 (CAS 20344-79-0), molecular formula C4H4N4 and molecular weight 108.10 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Temozolomide Impurity 16 (C4H4N4) contains a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 108.10 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Temozolomide Impurity 16 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H4N4 |
| Molecular Weight | 108.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 4 |
Related Temozolomide Standards
- Temozolomide Impurity 20 (CAS 18514-52-8)
- Temozolomide Impurity 14 (CAS 57052-92-3)
- Temozolomide Impurity 22 (CAS 1114912-01-4)
- Temozolomide Impurity 23 (CAS 360-97-4)
- Temozolomide Impurity 18 (CAS 4919-04-4)
- Temozolomide Impurity 16 (CAS 71749-37-6)
- Temozolomide EP Impurity D (CAS 7008-85-7)
- Temozolomide Impurity 10 (CAS 90801-87-9)
Recommended Standards
- Pyrimidine-4-carbaldehyde (CAS 2435-50-9)
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- Pyridazine-3-carbaldehyde (CAS 60170-83-4)
- 65735-07-1 3-Methyl-1,2-oxazole-5-carbonitrile DTXSID80611835 (CAS 65735-07-1)
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- 4-Fluoro-3-isopropoxybenzoic acid methyl ester (CAS 869990-48-7)
- N-(2,5-Difluorobenzyl)-1-ethyl-3-methyl-1H-pyrazol-5-amine hydrochloride (CAS 1856090-34-0)
- 2-[3-(1-aminoethyl)phenyl]-1$l^{6},2-thiazolidine-1,1-dione (CAS 1016507-70-2)
- 2-(Dimethylphosphinyl)-3-methoxybenzenamine (CAS 2361978-36-9)
- Doxofylline Impurity 37 (CAS CATO-C4X-151337)
- (2E)-1-[2-(2,3-Dichlorophenyl)-4-methyl-1,3-thiazol-5-yl]-3-(dimethylamino)prop-2-en-1-one (CAS 1211915-29-5)
- 2-(4-Amino-2-methyltetrahydro-2h-pyran-4-yl)acetic acid (CAS 1342383-76-9)
- 1,2,3-Thiadiazole-4-carboxylic acid (CAS 4100-13-4)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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