5-Nitro-1H-benzotriazole CAS 2338-12-7
| CAS No. | 2338-12-7 |
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Nitro-1H-benzotriazole (CAS 2338-12-7), a certified reference material (molecular formula C6H4N4O2, MW 164.12 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Nitro-1H-benzotriazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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-Nitro-1H-benzotriazole 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 | C6H4N4O2 |
| Molecular Weight | 164.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
Related Nitro Standards
- 5-Nitro-7H-pyrrolo[2,3-d]pyrimidine (CAS 1196661-92-3)
- 3-Nitro-2H-pyrazolo[3,4-c]pyridine (CAS 76006-15-0)
- 4-Nitro-1H-1,2,3-benzotriazole (CAS 6299-39-4)
- 5-Nitro-1,2-benzisoxazole (CAS 39835-28-4)
- 5-Nitro-2H-benzo[d][1,2,3]triazole (CAS 439291-00-6)
- 6-Nitro-[1,2,4]triazolo[1,5-a]pyridine (CAS 31040-14-9)
- 6-Nitro-[1,2,4]triazolo[4,3-a]pyridine (CAS 502486-45-5)
- 6-Nitro-3H-imidazo[4,5-b]pyridine (CAS 3537-09-5)
Recommended Standards
- 5-Cyano-6-oxo-1,6-dihydropyridine-2-carboxylic acid (CAS 19841-76-0)
- 5-Nitrobenzoxazole (CAS 70886-33-8)
- 5-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-ol (CAS 91144-81-9)
- 6-Amino-5-nitropicolinonitrile (CAS 516481-67-7)
- 2-(4-(1H-imidazol-1-yl)phenyl)-2-((4-bromo-3-methylphenyl)amino)acetonitrile (CAS 866157-65-5)
- (2S,3S)-3-Methyl-2-((S)-1-((S)-pyrrolidine-2-carbonyl)pyrrolidine-2-carboxamido)pentanoic acid (CAS 126369-38-8)
- (2,6-Difluoro-4-morpholinophenyl)boronic acid (CAS 1093878-46-6)
- Titanium Chloride (CAS 7705-07-9)
- 4-(Dimethoxymethyl)-2-(trifluoromethyl)pyrimidine (CAS 878760-47-5)
- 1-(3-Bromophenyl)cyclopropanecarboxylic acid hydrazide (CAS 1400644-74-7)
- 1-Acetyl-N-(3-ethynylphenyl)piperidine-4-carboxamide (CAS 861208-20-0)
- 1-(4-Isopropyl-4h-1,2,4-triazol-3-yl)-N-methylmethanamine dihydrochloride (CAS 1269379-00-1)
- 6,7-Dihydro-5H-pyrrolo[3,4-d]pyrimidin-2-amine (CAS 707539-41-1)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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