Carbocisteine Impurity 3 CAS 88620-38-6
| CAS No. | 88620-38-6 |
| Molecular Formula | C5H7NO4S |
| Molecular Weight | 177.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Carbocisteine Impurity 3 is closely related to a carbohydrate-derived structure, an amide group, a sulfone group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Carbocisteine Impurity 3 (CAS 88620-38-6) is a certified pharmaceutical impurity reference standard with the molecular formula C5H7NO4S and a molecular weight of 177.18 g/mol.
Based on its molecular formula C5H7NO4S, Carbocisteine Impurity 3 contains a carbohydrate-derived structure, an amide group, a sulfone group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 177.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C5H7NO4S |
| Molecular Weight | 177.18 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Carbocisteine Standards
- Carbocisteine Impurity 9 (CAS 87862-95-1)
- Carbocisteine S-Isomer (CAS 50698-76-5)
- Carbocisteine Impurity 13 (CAS 21301-10-0)
- Carbocisteine Impurity 62 (CAS CATO-C4X-201062)
- Carbocisteine-13C3 (CAS 1391068-19-1)
- Carbocisteine-d3 (CAS CATO-C4X-20105)
- Carbocisteine Impurity 43 (CAS CATO-C4X-201043)
- Carbocisteine Impurity 52 (CAS CATO-C4X-201052)
Recommended Standards
- 898767-30-1 4-(2-Fluorophenyl)-4-oxobutanenitrile DTXSID80642220 (CAS 898767-30-1)
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- 3,3-Difluoro-1-oxa-8-azaspiro[4.5]decane (CAS 1214875-09-8)
- 298690-71-8 4-(3-Fluorophenyl)-4-oxobutanenitrile DTXSID60617178 (CAS 298690-71-8)
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- Calcitriol Impurity 13 (CAS 169900-32-7)
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- 3-Amino-3-(4-bromophenyl)butanoic acid (CAS 1267336-23-1)
- N-cyclopentyl-2-(3-formyl-2-methyl-1H-indol-1-yl)acetamide (CAS 433964-99-9)
- 1H-Benzo[1,2-d:3,4-d':5,6-d'']triimidazole (CAS 103349-75-3)
- Methyl 5-Bromo-4-methoxy-2-methylbenzoate (CAS 1131587-94-4)
- Memantine Related Compound B (CAS 707-37-9)
- (2S,4R)-4-(Pyridin-3-ylmethyl)pyrrolidine-2-carboxylic acid (CAS 1049984-05-5)
- 1-His-N-a-ethylidene Semaglutide (CAS CATO-C4X-2226252)
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