Atosiban Impurity 4 CAS 2381861-04-5
| CAS No. | 2381861-04-5 |
| Molecular Formula | C27H34N4O6 |
| Molecular Weight | 510.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Atosiban Impurity 4 (CAS 2381861-04-5), a pharmacopoeial impurity reference standard (molecular formula C27H34N4O6, MW 510.58 g/mol) used for the identification and quantification of trace impurities in APIs.
Atosiban Impurity 4 (C27H34N4O6) 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.
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 | C27H34N4O6 |
| Molecular Weight | 510.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 4 |
Related Atosiban Standards
- Atosiban Impurity 103 (CAS CATO-C4X-2293103)
- Atosiban Impurity 104 (CAS CATO-C4X-2293104)
- Atosiban Impurity 55 (CAS 60195-82-6)
- Atosiban Impurity 101 (CAS CATO-C4X-2293101)
- Atosiban Impurity 102 (CAS CATO-C4X-2293102)
- Atosiban Impurity 56 (CAS CATO-C4X-229356)
- Atosiban Impurity 100 (CAS CATO-C4X-2293100)
- Atosiban Impurity 54 (CAS 1227206-06-5)
Recommended Standards
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
- Pemafibrate Impurity 81 (CAS CATO-C4X-290381)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
- Fmoc-Ser(tBu)-Ser(Psi(Me,Me)pro)-OH (CAS 1000164-43-1)
- Ozefloxacin Impurity 13 (CAS CATO-C4X-279613)
- Cefpodoxime Proxetil Impurity 25 (CAS CATO-C4X-157925)
- Nebivolol Impurity 100 (CAS CATO-C4X-1968100)
- Benzyl (S)-3-amino-1-oxa-8-azaspiro[4.5]decane-8-carboxylate (CAS 2169906-22-1)
- 2-Bromo-1-(4-methoxy-3-methylphenyl)ethan-1-one (CAS 99070-16-3)
- (3R,4S)-4-(6-methoxypyridin-3-yl)-2-oxopyrrolidine-3-carboxylic acid (CAS 1784748-03-3)
- Atorvastatin EP Impurity F (CAS 1371615-56-3)
- 5-Iodo-2-((4-methoxybenzyl)oxy)pyridine (CAS 1192064-49-5)
- Tert-butyl 5-methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrolo[2,3-c]pyridine-1-carboxylate (CAS 1632996-86-1)
- D-[Ala]24-Semaglutide (CAS CATO-C4X-2226126)
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