Prazosin EP Impurity D CAS 40172-95-0
| CAS No. | 40172-95-0 |
| Molecular Formula | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Prazosin EP Impurity D is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Prazosin EP Impurity D (CAS 40172-95-0) is a certified pharmaceutical impurity reference standard with the molecular formula C9H12N2O2 and a molecular weight of 180.20 g/mol.
Structurally, Prazosin EP Impurity D (C9H12N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 180.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Prazosin EP Impurity D 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 | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 2 |
Related Prazosin Standards
Recommended Standards
- Nilotinib Impurity 25 (CAS 41574-91-8)
- N-Nitroso Rivastigmine Impurity 30 (CAS CATO-C4X-138430)
- Bisoprolol Impurity 37 (CAS 4204-78-8)
- Rivastigmine Impurity 43 (CAS CATO-C4X-138443)
- Brivaracetam Impurity 148 (CAS CATO-C4X-2007148)
- Loxoprofen Impurity 5 (CAS 81762-82-5)
- Sitagliptin Impurity 101 (CAS CATO-C4X-1144101)
- 3-Hydroxy-4-(1-methyl-1H-indol-3-yl)-1H-pyrrole-2,5-dione (CAS 197390-12-8)
- tert-butyl 2-amino-2-(1-methyl-1H-pyrazol-5-yl)acetate (CAS 1909305-37-8)
- 2-Amino-3-(bicyclo[2.2.1]heptan-2-yl)propan-1-ol (CAS 1559500-17-2)
- 1-Methyl-6-oxo-2-(1-propyl-1H-pyrazol-4-yl)piperidine-3-carboxylic acid (CAS 1779127-38-6)
- 2-Hydroxyisoquinolin-1(2H)-one (CAS 21201-50-3)
- 3-Bromo-4-ethylpyridin-2-amine (CAS 1381938-68-6)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com