3,4-Di-O-benzyl DL-threo-Droxidopa Hydrochloride CAS 73594-43-1
| CAS No. | 73594-43-1 |
| Molecular Formula | C23H23NO5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4-Di-O-benzyl DL-threo-Droxidopa Hydrochloride (C23H23NO5HCl) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
3,4-Di-O-benzyl DL-threo-Droxidopa Hydrochloride (CAS 73594-43-1) is a high-purity analytical reference standard with the molecular formula C23H23NO5HCl and a molecular weight of 429.90 g/mol.
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.
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 | C23H23NO5 HCl |
| Molecular Weight | 429.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- 3<I>H</I>-1,2-benzodithiol-3-one (CAS 1677-27-6)
- 2-(Methylthio)-6-nitro-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 80773-00-8)
- 2-Butoxy-3-fluoro-1-methoxy-4-nitrobenzene (CAS 1881332-08-6)
- 2-Ethyl-5-methyl-1h-imidazol-3-ium tetraphenylborate (CAS 53831-70-2)
- Methyl 5-(3-fluorophenyl)furan-2-carboxylate (CAS 54023-07-3)
- 4,4'-Oxydibutanoic acid (CAS 7423-25-8)
- 1,4,5,6,7,8-Hexahydropyrazolo[3,4-d]azepin-3-ol (CAS 1256643-60-3)
- 6-Chloro-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 21500-69-6)
- Carfilzomib Impurity 67 (CAS 70637-27-3)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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