2-Chloro-1-ethynyl-3-fluorobenzene CAS 2003928-77-4
| CAS No. | 2003928-77-4 |
| Molecular Formula | C8H4ClF |
| Molecular Weight | 154.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-1-ethynyl-3-fluorobenzene (CAS 2003928-77-4) is a high-purity analytical reference standard with the molecular formula C8H4ClF and a molecular weight of 154.57 g/mol.
Based on its molecular formula C8H4ClF, 2-Chloro-1-ethynyl-3-fluorobenzene contains fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 154.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-Chloro-1-ethynyl-3-fluorobenzene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H4ClF |
| Molecular Weight | 154.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F/Cl-containing |
Related Chloro Standards
- 2-Chloro-1-ethynyl-4-fluorobenzene (CAS 1057670-02-6)
- 2-Chloro-4-ethynyl-1-fluorobenzene (CAS 1057670-04-8)
- 1-Chloro-2-ethynyl-4-fluorobenzene (CAS 1233501-58-0)
- 1-Chloro-3-ethynyl-5-fluorobenzene (CAS 1233506-04-1)
- 1-Chloro-3-ethynyl-2-fluorobenzene (CAS 1341512-63-7)
- 1-Chloro-2-ethynyl-3-fluorobenzene (CAS 1416266-74-4)
- 4-Chloro-1-ethynyl-2-fluorobenzene (CAS 188472-71-1)
- 1-Chloro-4-ethynyl-2-fluorobenzene (CAS 756895-72-4)
Recommended Standards
- 3-Chloro-4-Fluorobutanoic Acid Methyl Ester (CAS 541-86-6)
- (Chloromethyl)diethylphosphine oxide (CAS 37016-54-9)
- 4-Chloro-2-ethynyl-1-fluorobenzene (CAS 657425-07-5)
- 1-Chloro-N,N,N',N'-tetramethylphosphinediamine (CAS 3348-44-5)
- (5-(4-Methoxyphenyl)isoxazol-4-yl)methanol (CAS 430534-74-0)
- 2-Bromo-3,4-difluoro-1-(trifluoromethyl)benzene (CAS 663601-56-7)
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