3,4,5-Trichloropyridine CAS 33216-52-3
| CAS No. | 33216-52-3 |
| Molecular Formula | C5H2Cl3N |
| Molecular Weight | 182.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4,5-Trichloropyridine is closely related to a nitrile group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3,4,5-Trichloropyridine (CAS 33216-52-3), a certified reference material (molecular formula C5H2Cl3N, MW 182.44 g/mol) for analytical method development and quality control.
Structurally, 3,4,5-Trichloropyridine (C5H2Cl3N) contains a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 182.44 g/mol, it falls into the medium-molecular-weight range. 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 | C5H2Cl3N |
| Molecular Weight | 182.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Trichloropyridine Standards
- 2,3,4-Trichloropyridine (CAS 55934-02-6)
- 2,4,5-Trichloropyridine (CAS 55934-01-5)
- 2,5,6-Trichloropyridine (CAS 29154-14-1)
- 2,3,6-Trichloropyridine (CAS 6515-09-9)
- 2,3,5-Trichloropyridine (CAS 16063-70-0)
- 2,4,6-Trichloropyridine (CAS 16063-69-7)
- 2,3,5-Trichloropyridine-4-carbaldehyde (CAS 251997-31-6)
- Trichloropyridine-2,4-diamine (CAS 725208-26-4)
Recommended Standards
- Chloropentafluoroacetone (CAS 79-53-8)
- Pentafluoropropionyl chloride (CAS 422-59-3)
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- 2-Chloro-3,5,6-trifluorophenol (CAS 121555-66-6)
- 3-(Piperidin-4-yl)phenol (CAS 110878-71-2)
- 3-(Furan-2-ylmethylene)-2,3-dihydro-1H-cyclopenta[b]quinoline-9-carboxylic acid (CAS 22311-77-9)
- (S)-tetrahydrofuran-3-yl 4-methylbenzenesulfonate (CAS 112052-11-6)
- Paroxetine Impurity 26 (CAS 324023-99-6)
- 2-Methylprop-2-ene-1-sulfonic acid (CAS 3934-16-5)
- 2-(3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b]azepin-1-yl)acetic acid (CAS 204322-78-1)
- 1-(2,3-Dihydro-1H-inden-2-yl)piperidin-4-amine (CAS 1157983-92-0)
- 5-(3-Methoxyphenyl)-3-[5-phenyl-2-(1H-pyrrol-1-yl)furan-3-yl]-1,2,4-oxadiazole (CAS 866049-43-6)
- 2,3,3-trimethylbutanal (CAS 17408-48-9)
- Tau Peptide (401-411)-Lys-Lys trifluoroacetate salt (CAS 2022956-59-6)
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