Acetylcysteine Impurity 37 CAS 19547-88-7
| CAS No. | 19547-88-7 |
| Molecular Formula | C8H13NO4S |
| Molecular Weight | 219.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H13NO4S, Acetylcysteine Impurity 37 contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 219.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Acetylcysteine Impurity 37 (CAS 19547-88-7), a pharmacopoeial impurity reference standard (molecular formula C8H13NO4S, MW 219.26 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Acetylcysteine Impurity 37 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H13NO4S |
| Molecular Weight | 219.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1962 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Acetylcysteine Standards
- Acetylcysteine Impurity 4 (CAS 210354-22-6)
- Acetylcysteine Impurity 11 (CAS 79560-92-2)
- Acetylcysteine impurity 63 (CAS CATO-C4X-153263)
- Acetylcysteine EP Impurity D (CAS 18725-37-6)
- Acetylcysteine Impurity 47 (CAS 74401-71-1)
- Acetylcysteine Impurity 40 (CAS 51868-61-2)
- Acetylcysteine Impurity 17 (CAS CATO-C4X-153217)
- Acetylcysteine Impurity 18 (CAS 1637-71-4)
Recommended Standards
- 2-(Phenylsulfonyl)pyridine (CAS 24244-60-8)
- Sulbactam impurity 43 (CAS CATO-C4X-175643)
- 1-(4-Fluoro-benzyl)-3,5-dimethyl-1H-pyrazol-4-ylamine 1-(4-fluorobenzyl)-3,5-dimethyl-1h-pyrazol-4-amine 1-[(4-fluorophenyl)methyl]-3,5-dimethyl-1h-pyrazol-4-amine 514800-78-3 (CAS 514800-78-3)
- Oxamyl (CAS 23135-22-0)
- Levodropropizine EP Impurity B (CAS 92-54-6)
- [His]1-Acetylated Semaglutide (CAS CATO-C4X-2226219)
- Amphotericin B Impurity 24 (CAS CATO-C4X-184424)
- 1,2-Dimethyl-4,5-dinitro-1h-imidazole (CAS 19183-17-6)
- 3-(2,4-Dichloro-5-fluorophenyl)-1-(2-methoxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 618383-00-9)
- Perindopril Impurity 27 (CAS CATO-C4X-125227)
- 3-Chloro-4-(2-oxopiperidin-1-yl)benzaldehyde (CAS 1024209-05-9)
- Valaciclovir EP Impurity Q (CAS CATO-C4X-124817)
- Tetramethylammonium (acetate) (CAS 10581-12-1)
- Peptide 435 (CAS CATO-CPTD788435)
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