Etomidate Impurity 17 CAS 81591-23-3
| CAS No. | 81591-23-3 |
| Molecular Formula | C12H15NO3 |
| Molecular Weight | 221.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Etomidate Impurity 17 (C12H15NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 221.25 g/mol, it falls into the medium-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).
Etomidate Impurity 17 (CAS 81591-23-3) is a certified pharmaceutical impurity reference standard with the molecular formula C12H15NO3 and a molecular weight of 221.25 g/mol.
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), Etomidate Impurity 17 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 | C12H15NO3 |
| Molecular Weight | 221.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
Related Etomidate Standards
- Etomidate EP Impurity A (CAS 56649-48-0)
- Etomidate EP Impurity A (CAS 7036-56-8)
- (S)-Etomidate EP Impurity A (CAS 56649-49-1)
- Etomidate EP Impurity A (CAS 3157-27-5)
- （R)-Etomidate EP Impurity B (CAS 61045-91-8)
- Etomidate Impurity 44 (CAS 39096-80-5)
- Etomidate Impurity 76 (CAS CATO-C4X-188476)
- Etomidate impurity 63 (CAS CATO-C4X-188463)
Recommended Standards
- Polaprezinc Impurity 12 (CAS 19357-01-8)
- Tenoxicam EP Impurity H (CAS 64527-92-0)
- Ketoprofen EP Impurity I (CAS 21288-34-6)
- Evocalcet Impurity 47 (CAS CATO-C4X-248547)
- Docetaxel Impurity 84 (CAS CATO-C4X-161984)
- Relugolix Impurity 101 (CAS CATO-C4X-2429101)
- Papaverine Impurity 42 (CAS CATO-C4X-206742)
- 2-Amino-N-(2-amino-2-oxoethyl)acetamide (CAS 20238-94-2)
- 3-(3-Fluorobenzamido)-3-methylbutanoic acid (CAS 1427975-43-6)
- 1-[2-(aminomethyl)piperidin-1-yl]-2,2,2-trifluoroethan-1-one hydrochloride (CAS 1606799-59-0)
- CL-82198 hydrochloride, 98% (CAS 307002-71-7)
- Cinacalcet Dihydro Impurity 1 Hydrochloride Salt (CAS 1020414-33-8)
- 2-Methyl-1-(naphthalene-2-carbonyl)piperazine (CAS 1240566-58-8)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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