5-(3-Nitrophenyl)-1H-tetrazole CAS 21871-44-3
| CAS No. | 21871-44-3 |
| Molecular Formula | C7H5N5O2 |
| Molecular Weight | 191.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H5N5O2, 5-(3-Nitrophenyl)-1H-tetrazole contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 191.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
5-(3-Nitrophenyl)-1H-tetrazole (CAS 21871-44-3) is a high-purity analytical reference standard with the molecular formula C7H5N5O2 and a molecular weight of 191.15 g/mol.
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-(3-Nitrophenyl)-1H-tetrazole 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 | C7H5N5O2 |
| Molecular Weight | 191.15 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 5 |
Related Nitrophenyl Standards
- 1-(2-Nitrophenyl)-1h-1,2,3,4-tetrazole (CAS 14210-50-5)
- 1-(4-Nitrophenyl)-1h-1,2,3,4-tetrazole (CAS 14213-11-7)
- 5-(4-Nitrophenyl)-2H-tetrazole (CAS 16687-60-8)
- 5-(2-Nitrophenyl)-2H-tetrazole (CAS 53257-40-2)
- 3-(4-Nitrophenyl)-1,2,4-oxadiazole (CAS 16013-14-2)
- 2-(2-Nitrophenyl)-1,3,4-oxadiazole (CAS 89898-92-0)
- 2-(3-Nitrophenyl)-1,3,4-oxadiazole (CAS 5565-72-0)
- 2-(4-Nitrophenyl)-1,3,4-oxadiazole (CAS 4291-13-8)
Recommended Standards
- 5-(Aminomethyl)-2-(trifluoromethyl)phenol (CAS 916213-69-9)
- 4-Oxo-1-(trifluoromethyl)cyclohexane-1-carbonitrile (CAS 2770347-69-6)
- 5-Methoxy-2-(trifluoromethyl)aniline (CAS 654-83-1)
- 4-Nitro-2-(1H-1,2,4-triazol-1-yl)pyridine (CAS 942076-78-0)
- (S)-3-((2R,3R,4R,5S)-5-allyl-3-hydroxy-4-((phenylsulfonyl)methyl)tetrahydrofuran-2-yl)propane-1,2-diol (CAS 871348-10-6)
- 2-Oxocycloheptanecarbonitrile (CAS 7391-45-9)
- 1-Cyclopentylheptan-1-ol (CAS 97029-52-2)
- 2,5-dichlorothiophen-3-ylboronic acid (CAS 177735-28-3)
- rac 2-Aminothiazoline-4-carboxylic Acid-13C,15N2 (CAS 1346599-59-4)
- 5-(2-Hydroxyethyl)-3,4-dimethylpyrano[2,3-c]pyrazol-6(2H)-one (CAS 67056-50-2)
- tert-Butyl 4-(3-ethynylazetidin-1-yl)piperidine-1-carboxylate (CAS 2505498-79-1)
- 2-Amino-3-(4-chloro-3-hydroxyisoxazol-5-yl)propanoic acid (CAS 909400-43-7)
- 1-Boc-4-ethynylpyrazole (CAS 1093193-29-3)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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