1H-imidazo[4,5-b]pyridine-6-sulfonic acid CAS 91160-06-4
| CAS No. | 91160-06-4 |
| Molecular Formula | C6H5N3O3S |
| Molecular Weight | 199.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1H-imidazo[4,5-b]pyridine-6-sulfonic acid (CAS 91160-06-4) is a high-purity analytical reference standard with the molecular formula C6H5N3O3S and a molecular weight of 199.19 g/mol.
Based on its molecular formula C6H5N3O3S, 1H-imidazo[4,5-b]pyridine-6-sulfonic acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 199.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C6H5N3O3S |
| Molecular Weight | 199.19 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related H Standards
- 4-{imidazo[1,2-a]pyridin-2-yl}-5-methyl-1,2-oxazole (CAS 478245-86-2)
- 5-(Imidazo[1,2-a]pyridin-6-yl)-1H-pyrazol-3-amine (CAS 948883-30-5)
- ethyl imidazo[1,5-a]pyrazine-1-carboxylate (CAS 1377584-27-4)
- 3-{3H-imidazo[4,5-c]pyridin-2-yl}propanoic acid (CAS 933718-59-3)
- 3-{imidazo[1,2-a]pyrimidin-2-yl}propanoic acid (CAS 956101-01-2)
- ethyl imidazo[1,2-a]pyrimidine-3-carboxylate (CAS 64951-07-1)
- ethyl imidazo[1,2-a]pyrimidine-6-carboxylate (CAS 944906-58-5)
- 3-{imidazo[1,5-a]pyridin-1-yl}propanoic acid (CAS 1018253-90-1)
Recommended Standards
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