Erdosteine Impurity 9 CAS 10593-85-8
| CAS No. | 10593-85-8 |
| Molecular Formula | C4H7NOS |
| Molecular Weight | 117.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Erdosteine Impurity 9.
CATO supplies Erdosteine Impurity 9 (CAS 10593-85-8), a pharmacopoeial impurity reference standard (molecular formula C4H7NOS, MW 117.17 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Erdosteine Impurity 9 (C4H7NOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 117.17 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), Erdosteine Impurity 9 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4H7NOS |
| Molecular Weight | 117.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Erdosteine Standards
- Erdosteine impurity 14 (CAS CATO-C4X-196314)
- Erdosteine impurity 13 (CAS CATO-C4X-196313)
- Erdosteine Impurity 1 Sodium Salt(Mixture of Diastereomers) (CAS CATO-C4X-19631)
- Erdosteine impurity 16 (CAS CATO-C4X-196316)
- (R)-Erdosteine (CAS 160550-67-4)
- (S)-Erdosteine (CAS 159701-33-4)
- Erdosteine (CAS 84611-23-4)
- Erdosteine-D6 (CAS CATO-C4X-19632)
Recommended Standards
- D-Homocysteine thiolactone (CAS 130548-06-0)
- 1-Methyl-4-piperidone-2,2,6,6-d4 (CAS 1189723-14-5)
- 2-Methoxyethyl isothiocyanate 2-methoxyethylisothiocyanate 1-isothiocyanato-2-methoxyethane 1-isothiocyanato-2-methoxy-ethane 38663-85-3 (CAS 38663-85-3)
- N-(2-methoxyethyl)propan-2-amine (CAS 104678-18-4)
- Phloroglucinol Impurity 62 (CAS CATO-C4X-221762)
- Rabeprazole Impurity 45 (CAS CATO-C4X-112145)
- Gadobutrol Impurity 118 (CAS CATO-C4X-2120118)
- 2-(1-Benzyl-3,5-dimethyl-1h-pyrazol-4-yl)ethan-1-amine (CAS 1017789-11-5)
- Butyl (3,3,4,4,5,5,6,6,6-nonafluorohexyl) carbonate (CAS 1980086-73-4)
- Ethyl 4-(4-chloro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)benzoate (CAS 1383927-19-2)
- 4-(2-methylpropoxy)piperidine hydrochloride (CAS 903891-79-2)
- 6-Chloro-2,3-difluorothiophenol (CAS 1208075-95-9)
- 3-(3-(2-Chlorophenyl)-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one (CAS 950265-52-8)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
Why CATO?
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