2-(2-Chlorophenyl)-1H-1,2,4-triazol-3(2H)-one CAS 212202-69-2
| CAS No. | 212202-69-2 |
| Molecular Formula | C8H6ClN3O |
| Molecular Weight | 195.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(2-Chlorophenyl)-1H-1,2,4-triazol-3(2H)-one (CAS 212202-69-2), a certified reference material (molecular formula C8H6ClN3O, MW 195.61 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 2-(2-Chlorophenyl)-1H-1,2,4-triazol-3(2H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 195.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 2-(2-Chlorophenyl)-1H-1,2,4-triazol-3(2H)-one 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 | C8H6ClN3O |
| Molecular Weight | 195.61 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2017 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorophenyl Standards
- 4-(3-Chlorophenyl)-1,2,5-oxadiazol-3-amine (CAS 1082550-10-4)
- 5-(3-Chlorophenyl)-1,2,4-oxadiazol-3-amine (CAS 1092336-05-4)
- 3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-amine (CAS 114212-86-1)
- N-(4-Chlorophenyl)-N′-cyanourea (CAS 115956-45-1)
- 1-(4-Chlorophenyl)-1H-1,2,4-triazol-5(4H)-one (CAS 121117-98-4)
- 3-(2-Chlorophenyl)-1,2,4-oxadiazol-5-amine (CAS 1225851-81-9)
- 5-(2-Chlorophenyl)-1,2,4-oxadiazol-3-amine (CAS 1342677-58-0)
- 5-(3-Chlorophenyl)-1,3,4-oxadiazol-2-amine (CAS 1673-45-6)
Recommended Standards
- 1-Methyl-1H-benzotriazole-5-carbonyl chloride (CAS 423768-38-1)
- 2-(6-Chloropyridin-3-yl)-5-methyl-1,3,4-oxadiazole (CAS 70291-28-0)
- 1-(5-Chloro-1H-pyrazolo[3,4-c]pyridin-1-yl)ethan-1-one (CAS 76006-04-7)
- 2-Amino-5-(4-chlorophenyl)-1,3,4-oxadiazole (CAS 33621-61-3)
- 1-Cyclopentyl-2-(pyridin-3-yl)ethan-1-amine (CAS 1248046-98-1)
- 2-Amino-N-(3-methoxypropyl)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide (CAS 565171-08-6)
- N-(2-methyl-3-nitrophenethyl)-N-propylpropan-1-amine hydrochloride (CAS 920986-68-1)
- Ethyl 2-(3-phenylthioureido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 42076-12-0)
- 2,4-dichloropyrimido[4,5-d]pyrimidine (CAS 1197193-36-4)
- 5-(Benzyloxy)pyridine-2-carbaldehyde (CAS 59781-08-7)
- Hydroxy Sulfentrazone (CAS 134390-99-1)
- Belumosudil Impurity 28 (CAS CATO-C4X-298828)
- ((3aR,6aR)-Hexahydro-6aH-furo[2,3-c]pyrrol-6a-yl)methanol hydrochloride (CAS 2696258-01-0)
- Semaglutide Impurity 161 (x TFA Salt) (CAS CATO-C4X-2226161)
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