Atosiban Impurity 5 CAS 960411-86-3
| CAS No. | 960411-86-3 |
| Molecular Formula | C43H69N11O12S2 |
| Molecular Weight | 996.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Atosiban Impurity 5 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.
CATO supplies Atosiban Impurity 5 (CAS 960411-86-3), a pharmacopoeial impurity reference standard (molecular formula C43H69N11O12S2, MW 996.20 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Atosiban Impurity 5 (C43H69N11O12S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C43H69N11O12S2 |
| Molecular Weight | 996.20 g/mol |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 11 |
| Sulfur Atoms | 2 |
Related Atosiban Standards
- Atosiban Impurity 96 (CAS CATO-C4X-229396)
- Atosiban Impurity 1 (CAS CATO-C4X-22931)
- Atosiban Impurity 3 (CAS CATO-C4X-22933)
- Atosiban Impurity 95 (CAS CATO-C4X-229395)
- Atosiban Impurity 13 (CAS CATO-C4X-229313)
- Atosiban Impurity 9 (CAS CATO-C4X-22939)
- [Leu3]-Atosiban (CAS CATO-C4X-229375)
- Atosiban (CAS 90779-69-4)
Recommended Standards
- ((Methylstannanetriyl)tris(sulfanediyl))tris(ethane-2,1-diyl) tritetradecanoate (CAS 68928-38-1)
- 1,1,1-Trifluoro-N-[(11bS)-4-oxido-2,6-bis(triphenylsilyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]methanesulfonamide (CAS 1450764-52-9)
- [Arg8] a-Neo-Endorphin (1-8) (CAS 75106-72-8)
- Grubbs Catalyst<SUP>®</SUP> M201 (CAS 1307233-23-3)
- Ethosuximide impurity 4 (CAS CATO-C4X-26254)
- Sitagliptin impurity 143 (CAS CATO-C4X-1144143)
- Cyproheptadine impurity 15 (CAS 101596-48-9)
- 2-Amino-4-methoxybenzyl bromide (CAS 1261794-72-2)
- 2-(3,4-Dichlorophenyl)pyrimidine-5-carboxaldehyde (CAS 928713-46-6)
- 4-(Trifluoromethoxy)-1H-indazole-3-carboxylic acid (CAS 887581-46-6)
- Voglibose Impurity N6 (CAS 244230-63-5)
- 7,14-Diphenylacenaphtho[1,2-k]fluoranthene (CAS 7229-88-1)
- 1-Aminocyclopent-3-enecarboxylic acid (CAS 27314-05-2)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
Why CATO?
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