Zolpidem Impurity 1 CAS 109461-64-5
| CAS No. | 109461-64-5 |
| Molecular Formula | C19H21N3O2 |
| Molecular Weight | 323.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Zolpidem Impurity 1 (CAS 109461-64-5), a pharmacopoeial impurity reference standard (molecular formula C19H21N3O2, MW 323.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Zolpidem Impurity 1 (C19H21N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
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.
CATO manufactures Zolpidem Impurity 1 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H21N3O2 |
| Molecular Weight | 323.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
Related Zolpidem Standards
- Zolpidem D6 (CAS 959605-90-4)
- Zolpidem Impurity 15 (CAS 258273-49-3)
- Zolpidem 6-Carboxylic Acid (CAS 109461-15-6)
- Zolpidem Impurity 20 (CAS CATO-C4X-148620)
- 【禁售不询】Zolpidem (CAS 82626-48-0)
- Zolpidem USP RC A（Zolpidem EP Impurity A） (CAS 1346600-85-8)
- Zolpidem Impurity 9 (CAS CATO-C4X-14869)
- Zolpidem Impurity 19 (CAS CATO-C4X-148619)
Recommended Standards
- Cefditoren Impurity 7 (CAS 155723-02-7)
- Olotadine lmpurity 55 (CAS CATO-C4X-171855)
- (E)-Cefditoren Impurity 28 (CAS CATO-C4X-135828)
- Olopatadine Impurity 9 (CAS 113835-92-0)
- Levofloxacin Impurity 97 (CAS CATO-C4X-137197)
- Trelagliptin impurity 81 (CAS CATO-C4X-104681)
- Sunitinib Impurity 21 (CAS CATO-C4X-133321)
- {1-[benzyl(methyl)amino]cyclobutyl}methanol (CAS 1803570-49-1)
- 2-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)-1-(naphthalen-2-yl)ethan-1-one (CAS 1240570-74-4)
- (4-((1-(Tert-butoxycarbonyl)piperidin-4-yl)oxy)phenyl)boronic acid (CAS 1224449-07-3)
- 2,4-Dimethylquinoline-5,8-dione (CAS 52824-08-5)
- (3-Isopropoxy-5-methylphenyl)(thiophen-2-yl)methanol (CAS 1272801-44-1)
- 3-(1H-imidazol-1-yl)cyclohexan-1-one hydrochloride (CAS 1803605-49-3)
- Des-Asp15-Tirzepatide (CAS CATO-CPTD788958)
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