Erdosteine Impurity 8 CAS CATO-C4X-19638
| CAS No. | CATO-C4X-19638 |
| Molecular Formula | C12H16N2O4S3 |
| Molecular Weight | 348.46 g/mol |
| 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 Erdosteine Impurity 8 (CAS CATO-C4X-19638), a pharmacopoeial impurity reference standard (molecular formula C12H16N2O4S3, MW 348.46 g/mol) used for the identification and quantification of trace impurities in APIs.
Erdosteine Impurity 8 (C12H16N2O4S3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H16N2O4S3 |
| Molecular Weight | 348.46 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 3 |
Related Erdosteine Standards
- Erdosteine Thioacid Disodium Salt (CAS 254884-18-9)
- Erdosteine Impurity 11 (CAS CATO-C4X-196311)
- Erdosteine impurity 15 (CAS CATO-C4X-196315)
- Erdosteine Impurity 7 (CAS 84611-37-0)
- Erdosteine Impurity 10 (CAS 121213-21-6)
- Erdosteine Impurity 12 (CAS 2167084-15-1)
- Erdosteine Methyl Ester (CAS 1667709-77-4)
- Erdosteine-D6 (CAS CATO-C4X-19632)
Recommended Standards
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- (3R,4S,5S,6R)-2-(dodecyloxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (CAS 110615-47-9)
- Piracetam EP Impurity C (CAS 61516-73-2)
- Avacopan Impurity 9 (CAS CATO-C4X-29459)
- Sulbactam Impurity 36 (CAS CATO-C4X-175636)
- 6-Bromo-2,3-difluoro-4-hydroxybenzaldehyde (CAS 2010955-48-1)
- 3-(3-Methylphenoxy)propylamine (CAS 26646-51-5)
- 2’,3’-dihydro-1’H-spiro[cyclopropane-1,4’-isoquinoline]-1’,3’-dione (CAS 31267-07-9)
- 4-Bromo-1-pyrrolidin-3-yl-1H-pyrazole dihydrochloride (CAS 1965308-85-3)
- 2-Cyclopentyl-5-methyl-2H-pyrazol-3-ylamine 30241-37-3 9521AD C9H15N3 (CAS 30241-37-3)
- 2-(Piperidin-1-yl)but-3-en-1-ol (CAS 5449-11-6)
- Insulin Detemir (CAS 169148-63-4)
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