Cabotegravir Impurity 4 HCI CAS CATO-C4X-28764
| CAS No. | CATO-C4X-28764 |
| Molecular Formula | C4H11NO3S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 189.65 g/mol gives Cabotegravir Impurity 4 HCI distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cabotegravir Impurity 4 HCI (CAS CATO-C4X-28764, C4H11NO3SHCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Cabotegravir Impurity 4 HCI (C4H11NO3SHCl) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of -1.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 189.65 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C4H11NO3S HCl |
| Molecular Weight | 189.65 g/mol |
| Purity | ＞95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Cabotegravir Standards
- Cabotegravir (CAS 1051375-10-0)
- Cabotegravir Sodium (CAS 1051375-13-3)
- Cabotegravir Impurity 1 (CAS 1284487-51-9)
- Cabotegravir Impurity 8 (CAS 1616340-68-1)
- Cabotegravir Impurity 11 (CAS 1646862-08-9)
- Cabotegravir Impurity 8 (CAS 1646862-21-6)
- Cabotegravir Impurity 22 (CAS 2883234-38-4)
- Cabotegravir Impurity 16 (CAS 2883234-39-5)
Recommended Standards
- Letermovir impurity 110 (CAS CATO-C4X-2915110)
- Olaparib Impurity 116 (CAS CATO-C4X-1135116)
- Mirogabalin Impurity 115 (CAS CATO-C4X-2924115)
- 2-((Phenylthio)methyl)imidazo[1,2-a]pyrimidine (CAS 371211-44-8)
- 4-(Aminomethyl)pyridine Hydrochloride (CAS 64460-41-9)
- N-Boc-3-(3-methyl-4-nitrobenzyl)-L-histidine methyl ester (CAS 114787-83-6)
- 3-Methyl-N-(pyridin-2-ylmethyl)butan-1-amine (CAS 932267-88-4)
- 65181-78-4 (1,1'-Biphenyl)-4,4'-diamine, N4,N4'-bis(3-methylphenyl)-N4,N4'-diphenyl- (1,1'-Biphenyl)-4,4'-diamine, N,N'-bis(3-methylphenyl)-N,N'-diphenyl- N,N'-Diphenyl-N,N'-bis(3-methylphenyl)-(1,1'-diphenyl)-4,4'-diamine N,N'-Bis(3-methylphenyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine EC 413-810-8 (CAS 65181-78-4)
- D-Threose-2- (CAS 478506-49-9)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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