(2-Fluorophenyl)urea CAS 656-31-5
| CAS No. | 656-31-5 |
| Molecular Formula | C7H7FN2O |
| Molecular Weight | 154.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (2-Fluorophenyl)urea is closely related to an amide group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(2-Fluorophenyl)urea (CAS 656-31-5), molecular formula C7H7FN2O and molecular weight 154.14 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, (2-Fluorophenyl)urea is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 154.14 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.
CATO manufactures (2-Fluorophenyl)urea 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 | C7H7FN2O |
| Molecular Weight | 154.14 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluorophenyl Standards
- 1-(3-Fluorophenyl)urea (CAS 770-19-4)
- 2-(3-Fluorophenyl)acetic Acid (CAS 331-25-9)
- 2-Fluorophenyl Acetate (CAS 29650-44-0)
- 3-Fluorophenyl Acetate (CAS 701-83-7)
- 2-(4-Fluorophenyl)acetic acid (CAS 405-50-5)
- 4-Fluorophenyl Acetate (CAS 405-51-6)
- (1-(3-Fluorophenyl)ethyl)hydrazine (CAS 1016526-56-9)
- (1-(2-Fluorophenyl)ethyl)hydrazine (CAS 1016751-09-9)
Recommended Standards
- 5-Fluoro-2-methoxybenzaldehyde (CAS 19415-51-1)
- (R)-2-Fluoro-2-phenylacetic acid (CAS 63818-94-0)
- N-(4-Fluoropyridin-2-yl)acetamide (CAS 1935912-75-6)
- (Z)-4-Fluoro-N’-hydroxybenzimidamide (CAS 69113-32-2)
- 3-Methyl-1-(prop-2-yn-1-yl)-1,2-dihydropyridin-2-one (CAS 461661-66-5)
- (S)-2-(4-fluoro-3-methoxyphenyl)-2-(methylamino)ethan-1-ol (CAS 1213154-52-9)
- 8-Bromo-5-chloroquinoline (CAS 1154741-20-4)
- 6,7-Dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one (CAS 139218-70-5)
- 1H-Pyrrole-2,3-dicarbonitrile (CAS 59175-49-4)
- Methyl 2-(1-(4'-cyano-[1,1'-biphenyl]-4-yl)-1H-pyrrol-3-yl)acetate (CAS 207120-37-4)
- 2-(Difluoromethyl)-5-hydroxy-3-nitroisonicotinonitrile (CAS 1807148-58-8)
- FR 900098 Monosodium Salt (CAS 66508-32-5)
- 4-(3,4-Dichlorophenyl)-2-(ethanesulfonyl)-6-(trifluoromethyl)pyrimidine (CAS 870083-94-6)
- Neuropeptide S (human) (CAS 412938-67-1)
Why CATO?
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