Guaiazulene Impurity 2 CAS CATO-C4X-22372
| CAS No. | CATO-C4X-22372 |
| Molecular Formula | C15H15O4S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Guaiazulene Impurity 2 is closely related to a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Guaiazulene Impurity 2 (CAS CATO-C4X-22372), a pharmacopoeial impurity reference standard (molecular formula C15H15O4SNa, MW 314.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Guaiazulene Impurity 2 (C15H15O4SNa) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 manufactures Guaiazulene Impurity 2 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.
Physical & Chemical Properties
| Molecular Formula | C15H15O4S Na |
| Molecular Weight | 314.33 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Guaiazulene Standards
- Guaiazulene Impurity 3 (CAS 111631-17-5)
- Guaiazulene impurity 11 (CAS 24687-70-5)
- Methyl guaiazulene-3-carboxylate (CAS 39665-58-2)
- Guaiazulene (CAS 489-84-9)
- Guaiazulene Impurity 7 (CAS 65757-01-9)
- Guaiazulene Impurity 6 (CAS 93914-28-4)
- Guaiazulene Impurity 1 (CAS CATO-C4X-22371)
- Guaiazulene Impurity 10 (CAS CATO-C4X-223710)
Recommended Standards
- Estriol impurity 23 (CAS 1247-47-8)
- Salbutamol Impurity 22 (CAS CATO-C4X-117622)
- Moxifloxacin impurity 127 (CAS CATO-C4X-1074127)
- 1-(2-Iodo-4-nitrophenyl)-4-methylpiperazine (CAS 1254056-60-4)
- 3-Chloro-6-chloromethylpyridazine (CAS 120276-59-7)
- 4-Ethyl-6-methoxy-1,2,3,4-tetrahydroisoquinoline (CAS 1243816-97-8)
- N-Cyclopentyl-3-iodobenzamide (CAS 349118-02-1)
- 3-(Chloromethyl)-2-(trifluoromethyl)pyridine hydrochloride (CAS 2089326-33-8)
- 1-(2,3-dihydro-1,4-benzodioxin-2-yl)-2-(pyridin-4-yl)ethan-1-amine (CAS 1487367-55-4)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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