Acetylcysteine Impurity 18 CAS 1637-71-4
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1637-71-4 |
| Molecular Formula | C3H7NO5S2 |
| Molecular Weight | 201.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Acetylcysteine Impurity 18 (CAS 1637-71-4) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C3H7NO5S2. Molecular weight: 201.22 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C3H7NO5S2 |
| Molecular Weight | 201.22 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Acetylcysteine Standards
- Acetylcysteine EP Impurity D (CAS 18725-37-6)
- Acetylcysteine Impurity 47 (CAS 74401-71-1)
- Acetylcysteine impurity 63 (CAS CATO-C4X-153263)
- Acetylcysteine Impurity 11 (CAS 79560-92-2)
- Acetylcysteine impurity 66 (CAS 16708-09-1)
- Acetylcysteine Impurity 37 (CAS 19547-88-7)
- Acetylcysteine Impurity 4 (CAS 210354-22-6)
- Acetylcysteine Impurity 19 (CAS 2885-79-2)
Recommended Standards
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- Lenvatinib Impurity 183 (CAS 72793-38-5)
- Cefoxitin Impurity 15 (CAS 1918-77-0)
- 1H-pyrazolo[4,3-c]pyridine, 3-(3-chlorophenyl)-4,5,6,7-tetrahydro- (CAS 87628-44-2)
- Aceclidine Impurity 7 (CAS 211738-62-4)
- (S)-2-Amino-1-[4-(benzyl-ethyl-amino)-piperidin-1-yl]-3-methyl-butan-1-one (CAS 1354001-12-9)
- 2-[(4-Aminophenyl)thio]-N-(2-bromophenyl)-propanamide (CAS 913246-00-1)
- (Leu31,Pro34)-Peptide YY (human) trifluoroacetate salt (CAS 179986-95-9)
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 13829788188 / jacky.chen@cato-chem.com