5-Isopropyl-3,8-dimethylazulene-1-sulfonic acid CAS 16915-32-5
| CAS No. | 16915-32-5 |
| Molecular Formula | C15H18O3S |
| Molecular Weight | 278.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Isopropyl-3,8-dimethylazulene-1-sulfonic acid 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.
CATO supplies 5-Isopropyl-3,8-dimethylazulene-1-sulfonic acid (CAS 16915-32-5), a certified reference material (molecular formula C15H18O3S, MW 278.37 g/mol) for analytical method development and quality control.
Structurally, 5-Isopropyl-3,8-dimethylazulene-1-sulfonic acid (C15H18O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 278.37 g/mol, it falls into the medium-molecular-weight range. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H18O3S |
| Molecular Weight | 278.37 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Sulfur Atoms | 1 |
Related Isopropyl Standards
- 5-((4-Isopropyl-2-nitrophenoxy)methyl)-1,3,4-oxadiazol-2-amine (CAS 1706439-60-2)
- Isopropyl 5-bromo-2-chloroisonicotinate (CAS 1882662-23-8)
- Isopropyl 3-bromo-2-chloroisonicotinate (CAS 2379322-50-4)
- 4-Isopropyl-6-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine (CAS 2750602-40-3)
- Isopropyl 4-iodo-1H-pyrrole-2-carboxylate (CAS 1296172-31-0)
- Isopropyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole-1-carboxylate (CAS 1256360-07-2)
- 2-(((4-Isopropyl-3-methylphenyl)amino)methyl)succinic acid (CAS 866153-49-3)
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Recommended Standards
- Benzyl 4-carbamothioylpiperidine-1-carboxylate (CAS 167757-46-2)
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- Diethyl decylphosphonate (CAS 16165-68-7)
- 4-Amino-5-((2-isopropyl-5-methylphenoxy)methyl)-4h-1,2,4-triazole-3-thiol (CAS 186956-55-8)
- Benzyl(R)-1-methyl-2-oxoimidazolidine-4-carboxylate (CAS 1254700-17-8)
- Santonin (CAS 481-06-1)
- 6-(tert-Butoxy)-4-cyclopropoxy-N-methylnicotinamide (CAS 1243448-52-3)
- 2-((3-Cyano-4,6-dimethylpyridin-2-yl)thio)-N-(4-methyl-3-nitrophenyl)acetamide (CAS 332161-14-5)
- 3-Nitro-4-(phenylthio)benzyl 4-chlorobenzoate (CAS 320424-13-3)
- 6-Ethoxy-9-vinyl-9H-purin-2-amine (CAS 214201-71-5)
- tert-Butyl 2-(benzyloxy)-1-oxo-2,6-diazaspiro[3.5]nonane-6-carboxylate (CAS 1799438-99-5)
- 7-Bromo-1-methyl-2,3-dihydro-1H-imidazo[1,2-b]pyrazole (CAS 118767-86-5)
- 5,6,7,8-Tetrahydroimidazo[1,2-a]pyridine-3-carboxylic acid (CAS 55365-04-3)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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