3,4-Dimethylbenzenesulfonyl isocyanate CAS 21926-45-4
| CAS No. | 21926-45-4 |
| Molecular Formula | C9H9NO3S |
| Molecular Weight | 211.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3,4-Dimethylbenzenesulfonyl isocyanate 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.
3,4-Dimethylbenzenesulfonyl isocyanate (CAS 21926-45-4) is a high-purity analytical reference standard with the molecular formula C9H9NO3S and a molecular weight of 211.24 g/mol.
3,4-Dimethylbenzenesulfonyl isocyanate (C9H9NO3S) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C9H9NO3S |
| Molecular Weight | 211.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dimethylbenzenesulfonyl Standards
- 2,6-Dimethylbenzenesulfonyl Chloride (CAS 2905-29-5)
- 3,4-Dimethylbenzenesulfonyl chloride (CAS 2905-30-8)
- 2-(3,4-Dimethylbenzenesulfonyl)acetic acid (CAS 85654-12-2)
- 2,3-Dimethylbenzenesulfonyl fluoride (CAS 60218-20-4)
- 3,5-Dimethylbenzenesulfonyl fluoride (CAS 86146-00-1)
- 1-(3,4-Dimethylbenzenesulfonyl)butan-2-amine (CAS 1017140-34-9)
- 1-(2,4-Dimethylbenzenesulfonyl)piperazine (CAS 524711-32-8)
- 1-(2,5-Dimethylbenzenesulfonyl)piperazine (CAS 524711-33-9)
Recommended Standards
- 3-(Thiophen-2-yl)-4,5-dihydroisoxazole-5-carbohydrazide (CAS 478078-60-3)
- 3-Methyl-1H-indole-6-sulfonic acid (CAS 802834-18-0)
- 3-(Hydrazinecarbothioamido)benzoic acid (CAS 88114-33-4)
- 3-Oxo-2,3-dihydro-1h-indene-5-sulfonamide (CAS 702693-72-9)
- 4-(4-Fluorobenzoyl)quinoline (CAS 169957-25-9)
- 5-[4-(Methylsulfonyl)phenyl]-2-furaldehyde (CAS 68528-29-0)
- 4-((4-Chlorophenyl)thio)-2-phenyl-N-(3-(trifluoromethyl)phenyl)pyrimidine-5-carboxamide (CAS 400076-30-4)
- 1-BROMO-2-CHLORO-3-(PROP-1-YN-1-YL)BENZENE (CAS 1383985-42-9)
- (6-Bromoquinolin-3-yl)methanamine (CAS 1196154-63-8)
- N-(3-{Hydroxy[3-(trifluoromethyl)phenyl]methyl}-2-pyridinyl)-2,2-dimethylpropanamide (CAS 866038-90-6)
- (1R)-7-Chloro-6-fluoro-1-(2-isopropyl-4-methylpyridin-3-yl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 2300966-23-6)
- 4-Nitro-4-aminodiphenyl Sulfone (CAS 1948-92-1)
- (S)-5,7-Dihydroxy-2-methyl-2,3-dihydroquinolin-4(1H)-one (CAS 65511-03-7)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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