5-(5-Fluoro-2-methylphenyl)-2H-tetrazole CAS 1250242-44-4
| CAS No. | 1250242-44-4 |
| Molecular Formula | C8H7FN4 |
| Molecular Weight | 178.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 178.17 g/mol gives 5-(5-Fluoro-2-methylphenyl)-2H-tetrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(5-Fluoro-2-methylphenyl)-2H-tetrazole (CAS 1250242-44-4) is a high-purity analytical reference standard with the molecular formula C8H7FN4 and a molecular weight of 178.17 g/mol.
5-(5-Fluoro-2-methylphenyl)-2H-tetrazole (C8H7FN4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine 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.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H7FN4 |
| Molecular Weight | 178.17 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.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Fluoro Standards
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- 5-(4-fluoro-3-methylphenyl)-1H-1,2,3,4-tetrazole (CAS 1020969-35-0)
- 2-Fluoro-5-(4H-1,2,4-triazol-4-yl)aniline (CAS 1082766-13-9)
- 2-Fluoro-6-(1h-1,2,4-triazol-1-yl)aniline (CAS 1183856-70-3)
- 6-Fluoro-imidazo[1,2-a]pyridine-3-carboxamidine (CAS 1220039-94-0)
- 2-Fluoro-5-(1h-1,2,4-triazol-3-yl)aniline (CAS 1247084-34-9)
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Recommended Standards
- 1-(5-Fluoropyridin-2-yl)-1h-pyrazol-3-amine (CAS 1249756-58-8)
- 1,2,3-Trifluoro-5-(methylsulfanyl)benzene (CAS 1314966-54-5)
- 2-(Trifluoromethyl)benzenethiol (CAS 13333-97-6)
- Difluoromethyl 2-fluorophenyl sulphide (CAS 1228781-83-6)
- 1-(4-Methoxyphenoxy)-3-(4-phenylpiperazin-1-yl)propan-2-ol (CAS 110148-93-1)
- 3-(Pyridin-2-yl)butanoic acid (CAS 916262-56-1)
- 2-(4-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl)phenyl)acetonitrile (CAS 905966-41-8)
- CHLOROPHYLL C2 (CAS 27736-03-4)
- 2-((3S,4R)-3-Hydroxy-2,2-dimethyl-6-(trifluoromethoxy)chroman-4-yl)isoindolin-1-one (CAS 124916-54-7)
- (S)-N-((R)-1-(2-Amino-2-oxoethyl)-2-oxopyrrolidin-3-yl)pyrrolidine-2-carboxamide (CAS 114200-31-6)
- 1-(2,5-Dimethoxyphenyl)propan-2-ol (CAS 40180-96-9)
- 1-Cyclohexyl-3,4-dihydroisoquinoline (CAS 65071-52-5)
- N,N-Dimethyl-2-nitropyridin-3-amine (CAS 36100-38-6)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
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