Acetylcysteine impurity 60 CAS CATO-C4X-153260
| CAS No. | CATO-C4X-153260 |
| Molecular Formula | C5H9NO3S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Acetylcysteine impurity 60 (CAS CATO-C4X-153260), a pharmacopoeial impurity reference standard (molecular formula C5H9NO3SHCl, MW 199.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Acetylcysteine impurity 60 (C5H9NO3SHCl) 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 1 ring(s) or double-bond equivalent(s). With a molecular weight of 199.65 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 |
| 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
- Parecoxib Impurity 42 (CAS CATO-C4X-159142)
- Vitamin K1 Impurity 39 (CAS CATO-C4X-220739)
- Diphenhydramine impurity 14 (CAS CATO-C4X-142414)
- 2,3,5,6-Tetrafluoro-4-nitroaniline (CAS 776-16-9)
- (4-Isopropoxy-5-methoxy-2-(methoxymethoxy)phenyl)boronic acid (CAS 875654-34-5)
- Furazolidone Impurity 4 (CAS CATO-C4X-29014)
- 5-(Biphenyl-2-yloxymethyl)-4-(2-trifluoromethyl-phenyl)-4H-[1,2,4]triazole-3-thiol (CAS 722464-17-7)
- Ethyl 5-cyano-6-methoxy-4-methylpicolinate (CAS 1346576-27-9)
- 2-Bromo-6-(difluoromethyl)-3-methoxyisonicotinic acid (CAS 1805247-67-9)
- Tirzepatide (CAS 2023788-19-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com