5-Chloro-3H-imidazo[4,5-b]pyridine CAS 52090-89-8
| CAS No. | 52090-89-8 |
| Molecular Formula | C6H4ClN3 |
| Molecular Weight | 153.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Chloro-3H-imidazo[4,5-b]pyridine (CAS 52090-89-8), molecular formula C6H4ClN3 and molecular weight 153.57 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H4ClN3, 5-Chloro-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 153.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C6H4ClN3 |
| Molecular Weight | 153.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 5-Chloro-7H-pyrrolo[2,3-d]pyrimidine (CAS 1041864-02-1)
- 2-Chloro-1H-imidazo[4,5-b]pyridine (CAS 104685-82-7)
- 6-Chloro-[1,2,4]triazolo[4,3-a]pyridine (CAS 1048913-70-7)
- 3-chloro-[1,2,3]triazolo[1,5-a]pyridine (CAS 1087206-32-3)
- 3-Chloro-5H-pyrrolo[2,3-b]pyrazine (CAS 1111638-10-8)
- 2-Chloro-5H-pyrrolo[3,2-d]pyrimidine (CAS 1119280-66-8)
- 1-Chloro-4-cyanatobenzene (CAS 1124-59-0)
- 5-Chloro-4-methylpyrimidine-2-carbonitrile (CAS 114969-79-8)
Recommended Standards
- 5-Chloro-2-methylpyrimidine-4-carbonitrile (CAS 857428-36-5)
- 5-Chlorobenzo[c]isoxazole (CAS 4596-92-3)
- 5-Chloro-1H-pyrazolo[3,4-c]pyridine (CAS 76006-08-1)
- 5-Chlorobenzo[d]isoxazole (CAS 39900-62-4)
- 2,2-Difluorobut-3-en-1-ol (CAS 182439-31-2)
- ethyl 1-cyano-octahydrocyclopenta[c]pyrrole-2-carboxylate (CAS 1598150-74-3)
- Methyl 4-{3-[1-(3-nitro-2-pyridinyl)-4-piperidinyl]-1H-pyrazol-5-yl}phenyl ether (CAS 1031208-10-2)
- 19-Oxocinobufotalin (CAS 24512-60-5)
- 4-(4-Acetylpiperazin-2-yl)benzoic acid (CAS 1316221-78-9)
- Methyl 2-deoxy-3-5-di-O-benzoyl-D-ribofuranoside (CAS 108647-88-7)
- 2-Bromo-4-(trifluoromethyl)benzyl Alcohol (CAS 497959-33-8)
- (3,4-dimethoxyphenyl)(phenyl)methanamine hydrochloride (CAS 23731-51-3)
- 1,3-Benzenedicarboxylic acid, polymer with 1,2,3-propanetriol and 1,3,5-trimethoxy-1,5-dimethyl-1,3,5-triphenyltrisiloxane, (9Z,12Z,15Z)-9,12,15-octadecatrienoate (CAS 69029-30-7)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
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