Guaifenesin EP Impurity C CAS 1797132-23-0
| CAS No. | 1797132-23-0 |
| Molecular Formula | C20H26O7 |
| Molecular Weight | 378.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Guaifenesin EP Impurity C under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Guaifenesin EP Impurity C (CAS 1797132-23-0) is a certified pharmaceutical impurity reference standard with the molecular formula C20H26O7 and a molecular weight of 378.42 g/mol.
Guaifenesin EP Impurity C (C20H26O7) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C20H26O7 |
| Molecular Weight | 378.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
Related Guaifenesin Standards
- Guaifenesin Glucose Adduct 1 (CAS CATO-C4X-129410)
- Guaifenesin Glucose Adduct 2 (CAS CATO-C4X-129411)
- Guaifenesin Fructose Adduct 3 (CAS CATO-C4X-129412)
- Guaifenesin Fructose Adduct 4 (CAS CATO-C4X-129413)
- Guaifenesin EP Impurity D (CAS 16929-60-5)
- Guaifenesin Impurity 5 (CAS 2049-21-0)
- Guaifenesin Metabolite (Glyceryl Guaiacolate Metabolite) (CAS 13057-65-3)
- Guaifenesin-Glyceryl-<SUP>13</SUP>C<SUB>3</SUB> (CAS 1173019-31-2)
Recommended Standards
- Ambrisentan Impurity 6 (CAS 1007358-76-0)
- Selexipag Impurity 25 (CAS 788152-32-9)
- Ambrisentan (CAS 177036-94-1)
- Hybutimibe Impurity 2 (CAS CATO-C4X-25052)
- Calcium Dobesilate Impurity 2 (CAS CATO-C4X-20512)
- Fudosteine Impurity 68 (CAS CATO-C4X-144768)
- Pemetrexed EP Impurity B (CAS 1802552-04-0)
- 2-(2-(3,5-Dimethyl-4H-1,2,4-triazol-4-yl)phenoxy)acetic acid (CAS 1019111-23-9)
- Benzyl-PEG4-THP (CAS 1027926-86-8)
- 1-(5-Methyl-1H-benzo[d]imidazol-1-yl)propan-1-one (CAS 906755-62-2)
- 5-((4-Ethylphenoxy)methyl)-4-methyl-4H-1,2,4-triazole-3-thiol (CAS 667435-97-4)
- 6-Bromo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-1-one (CAS 1393534-34-3)
- 2,5-Bis(5-bromothiophen-2-yl)thiazolo[5,4-d]thiazole (CAS 1227366-41-7)
- D-Tyr10-Tirzepatide (CAS CATO-CPTD788922)
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