Temazepam-13C,d3 CAS 1189871-79-1
| CAS No. | 1189871-79-1 |
| Molecular Formula | C15[13C]H10D3ClN2O2 |
| Molecular Weight | 304.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Temazepam-13C,d3 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.
Temazepam-13C,d3 (CAS 1189871-79-1) is a high-purity analytical reference standard with the molecular formula C15[13C]H10D3ClN2O2 and a molecular weight of 304.75 g/mol.
The molecular framework of Temazepam-13C,d3 (C15[13C]H10D3ClN2O2) is characterized by deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C15[13C]H10D3ClN2O2 |
| Molecular Weight | 304.75 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Temazepam Standards
- Temazepam-D5 (CAS 136765-51-0)
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- Temazepam EP Impurity D (CAS 17191-70-7)
- Temazepam impurity G CRS (CAS 93329-92-1)
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- Temazepam Glucuronide (CAS 3703-53-5)
Recommended Standards
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- N-(7-Chloro-4-methylbenzo[d]thiazol-2-yl)pyrazine-2-carboxamide (CAS 1251562-43-2)
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