4-Chloro-2-(1H-1,2,4-triazol-3-yl)aniline CAS 55138-98-2
| CAS No. | 55138-98-2 |
| Molecular Formula | C8H7ClN4 |
| Molecular Weight | 194.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-2-(1H-1,2,4-triazol-3-yl)aniline (C8H7ClN4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 4-Chloro-2-(1H-1,2,4-triazol-3-yl)aniline (CAS 55138-98-2), a certified reference material (molecular formula C8H7ClN4, MW 194.62 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 4-Chloro-2-(1H-1,2,4-triazol-3-yl)aniline 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.
Physical & Chemical Properties
| Molecular Formula | C8H7ClN4 |
| Molecular Weight | 194.62 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.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 5-Chloro-6-methyl-7H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1000340-13-5)
- 4-Chloro-7-methyl-1H-indazole-3-carbaldehyde (CAS 1000340-67-9)
- 6-(4-Chloro-1H-pyrazol-1-yl)pyridin-3-amine (CAS 1006961-40-5)
- 4-Chloro-1-methyl-1,8-naphthyridin-2(1H)-one (CAS 1009360-86-4)
- 4-Chloro-6-(4-methylpyrazol-1-yl)pyrimidine (CAS 1015845-71-2)
- 6-Chloro-n-(prop-2-yn-1-yl)pyridine-3-carboxamide (CAS 1017047-71-0)
- 2-Chloro-5-(4H-1,2,4-triazol-4-yl)aniline (CAS 1017791-27-3)
- 2-Chloro-1-(1H-pyrrolo[2,3-b]pyridin-1-yl)ethanone (CAS 102014-84-6)
Recommended Standards
- 4-Chloro-1-methylquinazolin-2(1H)-one (CAS 79689-39-7)
- 4-Chloro-2-(2-methyl-1h-imidazol-1-yl)pyrimidine (CAS 959238-94-9)
- 4-Chloro-1-methyl-1H-pyrrolo[3,2-c]pyridine-3-carbaldehyde (CAS 97989-41-8)
- 4-Chloro-2-(furan-2-yl)-6-methylpyrimidine (CAS 28021-53-6)
- 3-(4-Chlorophenyl)-3,6-dihydro-7h-[1,2,3]triazolo[4,5-d]pyrimidin-7-one (CAS 114205-03-7)
- 2-(7-(1,5-Dimethyl-1h-pyrazol-4-yl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)acetic acid (CAS 1174835-55-2)
- Antimonate(5-), bis[4,5-di(hydroxy-κO)-1,3-benzenedisulfonato(4-)]-, pentasodium, (T-4)- (CAS 23940-36-5)
- 1-(Diaminomethylene)urea sulfate (CAS 5338-16-9)
- 4-(Hexylthio)-2-(4-methylpiperazin-1-yl)quinazoline maleate (CAS 129664-15-9)
- 5-Bromo-3-(piperidin-4-yl)-1H-indole-7-carboxamide (CAS 860625-19-0)
- (S)-2-Amino-2-(2,3-difluorophenyl)acetic acid (CAS 1043500-35-1)
- Methyltitanium(IV) chloride (CAS 2747-38-8)
- 3-(4-Chlorophenoxy)-3-methylbutanoic acid (CAS 1226272-36-1)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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