5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-[(3,4-dichlorophenyl)methyl]-1H-1,3-benzodiazole CAS 337920-72-6
| CAS No. | 337920-72-6 |
| Molecular Formula | C19H10Cl5N3 |
| Molecular Weight | 457.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-[(3,4-dichlorophenyl)methyl]-1H-1,3-benzodiazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-[(3,4-dichlorophenyl)methyl]-1H-1,3-benzodiazole (CAS 337920-72-6), molecular formula C19H10Cl5N3 and molecular weight 457.57 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-[(3,4-dichlorophenyl)methyl]-1H-1,3-benzodiazole (C19H10Cl5N3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 457.57 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C19H10Cl5N3 |
| Molecular Weight | 457.57 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-[(2,4-dichlorophenyl)methyl]-1H-1,3-benzodiazole (CAS 338774-27-9)
- 5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-[(2,6-dichlorophenyl)methyl]-1H-1,3-benzodiazole (CAS 338774-26-8)
- 5,6-Dichloro-2-(6-chloropyridin-3-yl)-1-(2,4-dichlorobenzyl)-1H-benzo[d]imidazole (CAS 303144-82-3)
- 5,6-Dichloro-2-(6-chloropyridin-3-yl)-1-[(3,4-dichlorophenyl)methyl]-1H-1,3-benzodiazole (CAS 303144-88-9)
- N-[2,4-Dichloro-5-(propan-2-yloxy)phenyl]-2-({[(4-methoxyphenyl)carbamoyl]methyl}sulfanyl)acetamide (CAS 341964-58-7)
- N-(2,4-dichloro-5-methoxyphenyl)-3-(2-fluoro-4-nitrophenoxy)thiophene-2-carboxamide (CAS 339015-56-4)
- 5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-{[3-(trifluoromethyl)phenyl]methyl}-1H-1,3-benzodiazole (CAS 860609-21-8)
- 3,4-dichloro-3'-piperidinomethyl benzophenone (CAS 898793-54-9)
Recommended Standards
- 3-(Furan-2-ylmethyl)-5-((1-phenyl-3-(p-tolyl)-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one (CAS 313362-43-5)
- 5-[4-(Benzenesulfonyl)-1-phenyl-1H-pyrazol-5-yl]-4-methyl-2-phenyl-1,3-thiazole (CAS 955962-74-0)
- [2-(4-MEthylpiperazinyl)-1-phenylethyl]methylamine (CAS 256227-71-1)
- Ethyl 4-[[1-Oxo-4-[(1,5,6,7-tetrahydro-4-oxo-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-2-yl)thio]butyl]amino]benzoate (CAS 496028-91-2)
- n-Octylsuccinic anhydride (CAS 4200-92-4)
- Methyl 2-amino-4-(3,4-dimethylphenyl)thiophene-3-carboxylate (CAS 350990-08-8)
- Benzo[d][1,3]dioxol-5-ylhydrazine (CAS 62646-09-7)
- 4-(Difluoromethyl)-3-(trifluoromethyl)phenol (CAS 1261606-01-2)
- 6-Hydroxy-3-(trichloromethyl)-2-benzofuran-1(3H)-one (CAS 82735-26-0)
- 2-(Methylthio)pyrimidine-5-carboxamide (CAS 473693-82-2)
- 6-Bromo-1-chloro-7-methoxyisoquinoline (CAS 758710-74-6)
- S-(2,5-Dimethylfuran-3-yl) benzothioate (CAS 55764-34-6)
- Estriol impurity 23 (CAS 1247-47-8)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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