Sodium 3-ethyl-7-isopropylazulene-1-sulfonate CAS 97683-31-3
| CAS No. | 97683-31-3 |
| Molecular Formula | C15H17O3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Sodium 3-ethyl-7-isopropylazulene-1-sulfonate (CAS 97683-31-3), molecular formula C15H17O3SNa and molecular weight 300.35 g/mol, is a CATO reference standard with documented purity and traceability.
Sodium 3-ethyl-7-isopropylazulene-1-sulfonate (C15H17O3SNa) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C15H17O3S Na |
| Molecular Weight | 300.35 g/mol |
| Purity | 97%+ |
| 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) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-(6-Bromo-1H-benzo[d]imidazol-1-yl)pyrimidin-2-amine (CAS 1394119-52-8)
- 6-(2-Methyl-1H-imidazol-1-yl)-N-(o-tolyl)pyridazine-3-carboxamide (CAS 1396863-92-5)
- N-(9-((2R,4S,5R)-5-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxytetrahydrofuran-2-yl)-9H-purin-6-yl)pivalamide (CAS 114745-11-8)
- 2-((5-Benzyl-1,3,4-oxadiazol-2-yl)thio)-N-(4-bromophenyl)acetamide (CAS 220597-89-7)
- 4-Amino-N-isobutylbenzenesulfonamide (CAS 53668-36-3)
- Lysine Impurity 7 (Ac-DL-Lys(Ac)-OH) (CAS 35436-74-9)
- Ethyl 2-(3-amino-6-methoxypyridin-2-yl)acetate (CAS 1823389-05-4)
- 1-(tert-Butyl)-1H-pyrazol-4-ol (CAS 78242-24-7)
- 7-Chloro-1H-indazol-3-amine (CAS 88805-67-8)
- Liraglutide Impurity 5 TFA Salt (CAS CATO-C4X-19925)
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