Imidazole-1-sulfonic Acid CAS 21108-81-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21108-81-6 |
| Molecular Formula | C3H4N2O3S |
| Molecular Weight | 148.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Imidazole-1-sulfonic Acid (CAS 21108-81-6) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C3H4N2O3S. Molecular weight: 148.14 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C3H4N2O3S |
| Molecular Weight | 148.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Imidazole Standards
- 1H-Imidazole-2-sulfonic acid (CAS 53744-47-1)
- 1H-Imidazole-1-sulfonamide (CAS 1310797-69-3)
- 1H-imidazole-2-sulfonamide (CAS 875244-89-6)
- 1h-Imidazole-4-sulfonamide (CAS 58768-75-5)
- 1H-Imidazole-2-sulfonyl fluoride (CAS 1934502-26-7)
- 1H-Imidazole-4-carbodithioic acid (CAS 84824-76-0)
- 1h-imidazole,4,5-dihydro-2-phenyl- 2-Hydroxybenzene-1-carbohydrazide 2-Phenyl-2-imidazoline 2-phenyl-2-imidazolin 2-phenylimidazoline 4,5-dihydro-2-phenyl-1h-imidazol 4,5-dihydro-2-phenyl-1h-imidazole 936-49-2 Salicylic acid hydrazide labotest-bb lt00000058 pin (CAS 936-49-2)
- Imidazole Pyruvic acid (CAS 2504-83-8)
Recommended Standards
- Furan-2-sulfonic acid (CAS 82971-11-7)
- methyl 2-fluoro-1H-imidazole-5-carboxylate (CAS 959086-47-6)
- Florasulam Metabolite TSA (CAS 89517-96-4)
- p-Tolyl 6-bromo-2-(4-bromophenyl)quinoline-4-carboxylate (CAS 355421-58-8)
- 2,2',2''-(2-(5-Iodothiophen-2-yl)ethene-1,1,2-triyl)trithiophene (CAS 656231-99-1)
- [2-(azepan-1-yl)ethyl](propyl)amine (CAS 1211478-00-0)
- 5-Bromo-3-phenyl-1H-indole (CAS 54470-19-8)
- N-(4-(2-Oxo-2-(pyrrolidin-1-yl)ethoxy)phenyl)acetamide (CAS 872883-50-6)
- N'-Hydroxy-1H-pyrazole-4-carboximidamide (CAS 468069-03-6)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
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 13829788188 / jacky.chen@cato-chem.com