5,6-Dichloro-3H-imidazo[4,5-b]pyridine CAS 189102-97-4
| CAS No. | 189102-97-4 |
| Molecular Formula | C6H3Cl2N3 |
| Molecular Weight | 188.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,6-Dichloro-3H-imidazo[4,5-b]pyridine.
5,6-Dichloro-3H-imidazo[4,5-b]pyridine (CAS 189102-97-4) is a high-purity analytical reference standard with the molecular formula C6H3Cl2N3 and a molecular weight of 188.01 g/mol.
Based on its molecular formula C6H3Cl2N3, 5,6-Dichloro-3H-imidazo[4,5-b]pyridine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 188.01 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).
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.
CATO manufactures 5,6-Dichloro-3H-imidazo[4,5-b]pyridine 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.
Physical & Chemical Properties
| Molecular Formula | C6H3Cl2N3 |
| Molecular Weight | 188.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2011 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 3,4-Dichloro-2-hydroxybenzonitrile (CAS 115661-18-2)
- 5,6-Dichloro-1,3-benzoxazole (CAS 1267335-10-3)
- 3,5-Dichloro-1H-pyrazolo[4,3-b]pyridine (CAS 1310680-12-6)
- 2,4-Dichloro-3H-pyrrolo[3,2-d]pyrimidine (CAS 1310680-17-1)
- 3,6-Dichloro-1H-pyrazolo[3,4-b]pyridine (CAS 1352893-80-1)
- 6,7-Dichloro-3H-imidazo[4,5-b]pyridine (CAS 1378594-79-6)
- 3,6-Dichloro-1H-pyrazolo[4,3-c]pyridine (CAS 1431721-01-5)
- 4,5-Dichloro-2-hydroxybenzonitrile (CAS 1541259-78-2)
Recommended Standards
- 2,4-Dichloro-5H-pyrrolo[2,3-d]pyrimidine (CAS 1823733-04-5)
- 5,7-Dichlorobenzoxazole (CAS 192753-42-7)
- 3,5-Dichloropyrazolo[1,5-a]pyrimidine (CAS 1823383-15-8)
- 2,7-Dichloro-5H-pyrrolo[3,2-d]pyrimidine (CAS 1934415-98-1)
- 3-(1-(3-Fluorophenyl)-3-methyl-1H-1,2,4-triazol-5-yl)propanoic acid (CAS 1142202-58-1)
- Finasteride Impurity 11 (CAS 1346602-40-1)
- (3,5-Dimethoxyphenyl)(5-methylpyridin-2-yl)methanone (CAS 1187170-71-3)
- Ornidazole Impurity 38 (CAS CATO-C4X-133138)
- Phosphoric acid, iSotridecyl ester (CAS 52933-07-0)
- (2,3-dimethylcyclohexyl)methanamine (CAS 1339914-30-5)
- Ethyl 6-azaspiro[2.5]octane-1-carboxylate hydrochloride (CAS 1983157-41-0)
- 3,4-Dichloro-N-[(E)-2-[6-methyl-3-(methylsulfanyl)-1,2,4-triazin-5-yl]ethenyl]aniline (CAS 306980-29-0)
- Calcipotriol EP Impurity D (CAS 112827-99-3)
- Cycloaspeptide D (CAS 691363-62-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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