Acetylcysteine Hydrochoride CAS 18829-79-3
| CAS No. | 18829-79-3 |
| Molecular Formula | C5H9NO3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Acetylcysteine Hydrochoride (C5H9NO3SHCl) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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.
CATO supplies Acetylcysteine Hydrochoride (CAS 18829-79-3), a certified reference material (molecular formula C5H9NO3SHCl, MW 199.65 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H9NO3S HCl |
| Molecular Weight | 199.65 g/mol |
| Purity | 97%+ |
| 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 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Acetylcysteine Standards
- Acetylcysteine Impurity 12 (CAS 1115-65-7)
- Acetylcysteine Impurity 41 (CAS 13100-82-8)
- N-Acetylcysteine-d3 (CAS 131685-11-5)
- Acetylcysteine Impurity 33 (CAS 15058-19-2)
- Acetylcysteine Impurity 37 (CAS 155172-79-5)
- Acetylcysteine Impurity 18 (CAS 1637-71-4)
- Acetylcysteine impurity 66 (CAS 16708-09-1)
- Acetylcysteine EP Impurity D (CAS 18725-37-6)
Recommended Standards
- (1-(4-Fluorophenyl)-5-methyl-1H-1,2,3-triazol-4-yl)methanamine (CAS 1049131-33-0)
- N-(4-(1-Methyl-6-oxo-1,6-dihydropyridazin-3-yl)phenyl)butyramide (CAS 941920-89-4)
- 2-Bromo-4-chlorobenzonitrile (CAS 57381-49-4)
- tert-Butyl (trans-4-(cyclobutylamino)cyclohexyl)carbamate (CAS 1286275-75-9)
- Montelukast Dehydro Impurity (CAS 168214-68-4)
- 6-Bromo-8-fluoroisoquinolin-3-amine (CAS 1260815-69-7)
- (Z)-2-(1,2-Diphenylvinyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 264144-59-4)
- 4-[2-(4-Chlorophenyl)acetyl]-8-propyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326811-63-5)
- 3-Chloro-2-fluoro-4-methoxyaniline (CAS 1936314-06-5)
- Endo-Gly4-Semaglutide (CAS CATO-C4X-222679)
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