Oxazepam CAS 604-75-1
| CAS No. | 604-75-1 |
| Molecular Formula | C15H11ClN2O2 |
| Molecular Weight | 286.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Oxazepam.
Oxazepam (CAS 604-75-1), molecular formula C15H11ClN2O2 and molecular weight 286.71 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Oxazepam is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.71 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C15H11ClN2O2 |
| Molecular Weight | 286.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 100μg/mL in Acetonitrile |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Oxazepam Standards
Recommended Standards
- 4'-Hydroxynordiazepam (CAS 17270-12-1)
- 1-(3-Chlorophenyl)-4-cyclopropyl-1,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one (CAS 1105197-33-8)
- 2-[[3-Chloro-5-(trifluoromethyl)-2-pyridyl]sulfanyl]thioacetamide (CAS 1823182-94-0)
- Clobazam EP Impurity A (CAS 22316-55-8)
- 6-Chloro-N,N-dimethyl-2-(methylsulfinyl)pyrimidin-4-amine (CAS 1353945-21-7)
- 1-(1-Hydroxycyclopentyl)ethan-1-one (CAS 17160-89-3)
- N-(2-morpholinoethyl)tetrahydro-2H-thiopyran-4-amine (CAS 1153349-05-3)
- Azelastine-13C,d3 (CAS 1217019-80-1)
- 2-Amino-6,7-dihydropyrazino[2,3-d]pyridazine-5,8-dione (CAS 22051-73-6)
- N-Methyl-2-(2-(thiophen-2-yl)acetamido)thiophene-3-carboxamide (CAS 921816-03-7)
- N-benzhydryl-5-(4-methylpiperazin-1-yl)-2-nitroaniline (CAS 347353-94-0)
- N1-(1-Acetyl-1,2,3,4-tetrahydroquinolin-7-yl)-N2-(2-methoxyethyl)oxalamide (CAS 898465-74-2)
- Methyl 4-hydroxy-3,5-dimethoxy-d (CAS 1182838-09-0)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788692)
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