5-Chloro-3-nitro-1H-1,2,4-triazole CAS 70890-47-0
| CAS No. | 70890-47-0 |
| Molecular Formula | C2HClN4O2 |
| Molecular Weight | 148.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Chloro-3-nitro-1H-1,2,4-triazole.
CATO supplies 5-Chloro-3-nitro-1H-1,2,4-triazole (CAS 70890-47-0), a certified reference material (molecular formula C2HClN4O2, MW 148.51 g/mol) for analytical method development and quality control.
5-Chloro-3-nitro-1H-1,2,4-triazole (C2HClN4O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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), 5-Chloro-3-nitro-1H-1,2,4-triazole 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 | C2HClN4O2 |
| Molecular Weight | 148.51 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 1-Chloro-2-(trifluoromethoxy)ethane (CAS 1645-95-0)
- 2-Chloro-1,1,2-trifluoro-1-methoxyethane (CAS 425-87-6)
- 4-Chloro-1,2,5-oxadiazole-3-carboxylic acid (CAS 1314934-33-2)
- 5-Chloro-1,3,4-oxadiazole-2-carboxylic acid (CAS 1446409-04-6)
- 2-Chloro-5-Fluoropyrimidin-4(3H)-One (CAS 155-12-4)
- 6-Chloro-5-fluoropyrimidin-4(1H)-one (CAS 1805161-90-3)
- 2-Chloro-6-fluoropyrimidin-4-ol (CAS 1805225-46-0)
- 4-Chloro-6-fluoropyrimidin-5-ol (CAS 1805639-49-9)
Recommended Standards
- 5-Fluorofuran-2-carbonyl Chloride (CAS 1173834-52-0)
- 2-(Chloromethoxy)-1,1,1-trifluoroethane (CAS 21937-47-3)
- 1-Chloro-1,3,3,3-tetrafluoropropene (CAS 460-71-9)
- 2-Chloro-4-fluoropyrimidin-5-ol (CAS 1807115-17-8)
- 1-(2-Methylpiperazin-1-yl)-2-phenoxyethan-1-one (CAS 1240577-38-1)
- 2-Amino-5-(trifluoromethyl)pyridine (CAS 74784-70-6)
- N-(2-(Furan-2-yl)-2-hydroxypropyl)picolinamide (CAS 1396761-80-0)
- 1-Isobutyl-2-(4-methoxyphenyl)piperidine (CAS 1355225-82-9)
- N-(2-Fluorophenyl)-5-isopropyl-1-phenyl-1H-1,2,3-triazole-4-carboxamide (CAS 954816-71-8)
- Bumetanide Impurity 125 (CAS CATO-C4X-1986125)
- Ganaxolone (CAS 38398-32-2)
- 6-Methanesulfonyl-1h-indole (CAS 467461-40-1)
- 2-(Bromomethyl)-7-chloroquinoline (CAS 115104-25-1)
- Semaglutide impurity 247 (CAS CATO-C4X-2226247)
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