1,3-Difluoro-5-(2-methylallyl)benzene CAS 951892-81-2
| CAS No. | 951892-81-2 |
| Molecular Formula | C10H10F2 |
| Molecular Weight | 168.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 168.18 g/mol gives 1,3-Difluoro-5-(2-methylallyl)benzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,3-Difluoro-5-(2-methylallyl)benzene (CAS 951892-81-2), molecular formula C10H10F2 and molecular weight 168.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to fluorine substitution, an aromatic ring system, 1,3-Difluoro-5-(2-methylallyl)benzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 168.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C10H10F2 |
| Molecular Weight | 168.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 1,2-Difluoro-4-(2-methylallyl)benzene (CAS 951892-66-3)
- 6,8-Difluoro-2h-chromene (CAS 1015938-81-4)
- 6,7-Difluoro-3-methyl-1H-indazole (CAS 1017682-83-5)
- 4,6-Difluoro-3-methyl-1H-indazole (CAS 1017683-09-8)
- 4,6-Difluoro-1-methyl-1H-indazole (CAS 1185767-08-1)
- 2,2-Difluoro-3-hydroxyhexanoic acid (CAS 1248415-95-3)
- 4,7-Difluoro-1-indanone (CAS 130408-16-1)
- 4,6-difluoro-1-methyl-1H-1,3-benzodiazole (CAS 1329166-89-3)
Recommended Standards
- 2-(But-3-en-1-yl)-1,4-difluorobenzene (CAS 951892-23-2)
- 1-(But-3-en-1-yl)-3,5-difluorobenzene (CAS 225240-58-4)
- 2-Hydroxy-6-mercaptopurine (CAS 2002-59-7)
- 1-(But-3-en-1-yl)-2,4-difluorobenzene (CAS 951893-32-6)
- 2-Hydroxy-3-methylbenzohydrazide (CAS 30991-42-5)
- N-Formyl N,N-Didesmethyl Sibutramine-d6 (CAS 1185163-48-7)
- (1-Benzyl-4,4-difluoropiperidin-3-yl)methanol (CAS 1303973-25-2)
- Methyl 3-(benzyloxy)benzo[b]thiophene-2-carboxylate (CAS 722517-50-2)
- (R)-2-(3-Isopropyl-5-oxopiperazin-1-yl)acetic acid (CAS 1240588-07-1)
- 4-(Bromomethyl)-4-butyltetrahydro-2h-pyran (CAS 1498240-66-6)
- N-(trifluoroacetyl)-Alanyl Chloride (CAS 1597-19-9)
- 2-((5-Nitropyridin-2-yl)oxy)ethan-1-amine (CAS 1251200-73-3)
- 2-(Difluoromethyl)-4-hydroxy-3-iodo-6-(trifluoromethyl)pyridine (CAS 1805450-63-8)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
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