Doxepin Hydrochloride CAS 1229-29-4
| CAS No. | 1229-29-4 |
| Molecular Formula | C19H21NO |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Doxepin Hydrochloride (CAS 1229-29-4), molecular formula C19H21NOHCl and molecular weight 315.84 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Doxepin Hydrochloride (C19H21NOHCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 315.84 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), Doxepin Hydrochloride 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 | C19H21NO HCl |
| Molecular Weight | 315.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Doxepin Standards
- Doxepin EP Imp C(Desmethyldoxepine)(USP (CAS 1225-56-5)
- Doxepin Impurity 2 (CAS 131523-93-8)
- Doxepin-D (CAS 138387-16-3)
- Doxepin Impurity 7 (CAS 21324-99-2)
- Doxepin impurity 17 (CAS 22684-91-9)
- Doxepin EP Impurity D HCl ((Z)-Doxepin HCl) (CAS 25127-31-5)
- Doxepin EP Impurity C HCl(Mixture of Z and E Isomers) (CAS 2887-91-4)
- Doxepin-d3 Hydrochloride (CAS 347840-07-7)
Recommended Standards
- HO-PEG14-OH (CAS 1189112-05-7)
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- GSK-3 Inhibitor X (CAS 740841-15-0)
- 3,4-Difluoro-3-(2,5-dimethylphenyl)propiophenone (CAS 898754-08-0)
- 1,3-Dioxo-octahydroimidazolidino[1,5-a]piperazine-7-carboxamide (CAS 1258639-45-0)
- 6-(2-(Benzylthio)ethyl)-9-(tetrahydro-2H-pyran-2-yl)-9H-purine (CAS 920503-56-6)
- 2,4,5-Trifluoro-3-methoxybenzoyl chloride (CAS 112811-66-2)
- 1-(2-Methylbenzyl)-1H-indole-3-carbonitrile (CAS 1226240-79-4)
- 4-(aminomethyl)-4-hydroxycyclohexane-1-carboxylic acid hydrochloride (CAS 1989672-25-4)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
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