6,8-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one CAS 145348-28-3
| CAS No. | 145348-28-3 |
| Molecular Formula | C10H8F2O2 |
| Molecular Weight | 198.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 6,8-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one is closely related to a carboxylic acid 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.
6,8-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one (CAS 145348-28-3), molecular formula C10H8F2O2 and molecular weight 198.17 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, 6,8-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 198.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 6,8-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one 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 | C10H8F2O2 |
| Molecular Weight | 198.17 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 7,9-Difluoro-2,3,4,5-tetrahydro-1-benzoxepin-5-one (CAS 127557-05-5)
- 8,9-Difluoro-3,4-dihydrobenzo[b]oxepin-5(2H)-one (CAS 1341995-45-6)
- 1,1-Difluoro-2,3-dihydro-1H-indene-5-carboxylic acid (CAS 1403935-25-0)
- Methyl 2,6-difluoro-4-vinylbenzoate (CAS 1431948-81-0)
- 7,8-Difluoro-3,4-dihydrobenzo[b]oxepin-5(2H)-one (CAS 145348-29-4)
- 3,3-Difluoro-2,3-dihydro-1H-indene-5-carboxylic acid (CAS 1547144-66-0)
- 2,2-Difluoro-1-phenylcyclopropane-1-carboxylic acid (CAS 156021-07-7)
- 3-(2,4-Difluoro-5-methylphenyl)acrylic acid (CAS 1562311-33-4)
Recommended Standards
- 3-Ethynyl-2,4-difluoro-1,5-dimethoxybenzene (CAS 1453211-49-8)
- 2-Hydroxyethyl 2,4-dihydroxybenzoate (CAS 145073-32-1)
- rel-(1S,2R,3S,4R)-3-methoxycarbonyl-7-oxabicyclo[2.2.1]hept-5-ene-2-carboxylic acid (CAS 146339-80-2)
- 2-(furan-2-ylmethyl)-3-methoxy-3-oxopropanoic acid (CAS 1443981-96-1)
- 3-Amino-5-fluoro-2-methylbenzaldehyde (CAS 1378656-09-7)
- 5-Bromo-3-chloro-4-methylpyridin-2(1H)-one (CAS 1799612-50-2)
- 3-(Piperidin-4-yl)benzamide hydrochloride (CAS 2409597-13-1)
- 1-(5-Bromopyridin-2-yl)azetidin-3-ol (CAS 1339319-85-5)
- (5-(5-Amino-2-chlorophenyl)furan-2-yl)methanol (CAS 874999-55-0)
- Methyl 2-(2-cyanoacetamido)-4-(4-fluorophenyl)thiophene-3-carboxylate (CAS 546116-59-0)
- (2E)-3-(4-Ethoxyphenyl)-1-(4-nitrophenyl)prop-2-en-1-one (CAS 39059-89-7)
- N-Carbobenzoxy-S-Phenyl-L-Cysteine Methyl Ester (CAS 153277-33-9)
- 2-Chloro-5-iodo-3-methoxypyridin-4-amine (CAS 2454491-04-2)
- Insulin Degludec Impurity 24 (CAS CATO-C4X-215724)
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