Diazepam-d5 CAS 65854-76-4
| CAS No. | 65854-76-4 |
| Molecular Formula | - |
| Molecular Weight | 289.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Diazepam-d5 (CAS 65854-76-4), a certified reference material (molecular formula C16H8D5ClN2O, MW 289.77 g/mol) for analytical method development and quality control.
Based on its molecular formula C16H8D5ClN2O, Diazepam-d5 contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 289.77 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C16H8D5ClN2O |
| Molecular Weight | 289.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 100μg/mL in Methanol |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Diazepam Standards
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- Diazepam Impurity 10 (CAS CATO-C4X-146510)
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Recommended Standards
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- 4-(Methylamino)benzene-1-carboximidamide dihydrochloride (CAS 1421604-83-2)
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- 2-({2-[2-(2-Isopropyl-5-methylphenoxy)acetyl]hydrazino}carbonyl)cyclohexanecarboxylic acid (CAS 446844-47-9)
- (3R,5R)-3-(Benzyloxy)-5-ethyldihydrofuran-2(3H)-one (CAS 741290-49-3)
- 4-[6-(3-Methoxyphenoxy)pyridazin-3-yl]benzoic acid (CAS 1170991-22-6)
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- Peptide 439 (CAS CATO-CPTD788439)
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