Ibutilide USP Related Compound A CAS 100632-58-4
| CAS No. | 100632-58-4 |
| Molecular Formula | C20H32N2O4S |
| Molecular Weight | 396.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ibutilide USP Related Compound A 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.
Ibutilide USP Related Compound A (CAS 100632-58-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H32N2O4S and a molecular weight of 396.54 g/mol.
Ibutilide USP Related Compound A (C20H32N2O4S) contains a steroid core, an amide group, a sulfone 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. 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 | C20H32N2O4S |
| Molecular Weight | 396.54 g/mol |
| Purity | >95% |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ibutilide Standards
- Ibutilide Impurity 5 (CAS CATO-C4X-21105)
- Ibutilide USP Related Compound B (CAS 160087-98-9)
- Ibutilide (CAS 122647-31-8)
- Ibutilide Impurity 10 (CAS CATO-C4X-211010)
- Ibutilide Impurity 7 (CAS CATO-C4X-21107)
- Ibutilide Impurity 6 (CAS CATO-C4X-21106)
- Ibutilide Impurity 3 (CAS CATO-C4X-21103)
- Ibutilide Impurity 4 (CAS CATO-C4X-21104)
Recommended Standards
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- Dopamine Impurity 111 (CAS CATO-C4X-1908111)
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- 3-Methoxy-4-methylpyridine (CAS 142918-38-5)
- 3-(3,4-diethoxyphenyl)cyclohex-2-en-1-one (CAS 1479723-48-2)
- 6-Bromo-1,2,3,4-tetrahydronaphthalen-2-ol (CAS 173996-27-5)
- 3-(4-Bromophenyl)-6-chloropyridazine (CAS 66548-50-3)
- 5-Bromo-6-phenylpyrazin-2-amine (CAS 1260671-99-5)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
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