9-chloro-7-methyl-2,3,4,5-tetrahydro-1-benzoxepin-5-one CAS 1250774-56-1
| CAS No. | 1250774-56-1 |
| Molecular Formula | C11H11ClO2 |
| Molecular Weight | 210.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 9-chloro-7-methyl-2,3,4,5-tetrahydro-1-benzoxepin-5-one (CAS 1250774-56-1), a certified reference material (molecular formula C11H11ClO2, MW 210.66 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H11ClO2, 9-chloro-7-methyl-2,3,4,5-tetrahydro-1-benzoxepin-5-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 210.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H11ClO2 |
| Molecular Weight | 210.66 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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.) | 1990 |
| Halogen Content | Cl-containing |
Related chloro Standards
- 3-(6-Chloro-1H-benzo[d]imidazol-2-yl)propan-1-ol (CAS 10252-89-8)
- 1-(3-Chloro-4-methylphenyl)imidazolidin-2-one (CAS 1031927-20-4)
- 7-chloro-9-methyl-2,3,4,5-tetrahydro-1-benzoxepin-5-one (CAS 103501-83-3)
- 5-Chloro-7-methoxy-1,2,3,4-tetrahydronaphthalen-1-one (CAS 1092348-22-5)
- 2-(6-chloro-5-methyl-1,3-benzoxazol-2-yl)ethanamine,HCl (CAS 1119450-64-4)
- 6-Chloro-α,1-dimethyl-1H-benzimidazole-2-methanol (CAS 1145670-41-2)
- 5-Chloro-α,1-dimethyl-1H-benzimidazole-2-methanol (CAS 1145670-47-8)
- 2-(6-Chloro-5-methyl-1,3-benzoxazol-2-yl)-ethanamine hydrochloride (CAS 1158324-46-9)
Recommended Standards
- 3-amino-1-(2-chlorophenyl)pyrrolidin-2-one (CAS 1250287-34-3)
- (E)-Methyl 4-(4-chlorophenyl)but-2-enoate (CAS 1250907-53-9)
- 3-amino-1-(3-chlorophenyl)pyrrolidin-2-one (CAS 1250022-31-1)
- 8-Chloro-7-methoxy-1,2,3,4-tetrahydronaphthalen-1-one (CAS 1260011-24-2)
- 2-(4-(N-Hydroxycarbamimidoyl)phenyl)-2-methylpropanamide (CAS 1388214-89-8)
- 2-(2-Phenylthiazol-4-yl)acetonitrile, 97% (CAS 16441-25-1)
- (R)-2-(4-Fluorophenyl)propan-1-ol (CAS 500019-47-6)
- 2’-Amino-5’-fluoroacetophenone (CAS 2343-25-1)
- (3aR,4S,6S,7S,7aR)-4-(4-Methoxyphenoxy)-2,2,6-trimethyltetrahydro-4H-[1,3]dioxolo[4,5-c]pyran-7-ol (CAS 583040-99-7)
- 2,3,5,6-Tetrachloro-4-(dimethyl(phenyl)silyl)pyridine (CAS 18359-50-7)
- Sodium (2-chloro-6-fluorophenyl)methanesulfinate (CAS 1417794-62-7)
- 2-Chloro-3,5-dihydroxybenzoic acid (CAS 87251-21-6)
- 4-Chloro-3-(difluoromethyl)-5-hydroxypyridine-2-acetonitrile (CAS 1806005-63-9)
- Semaglutide Impurity 184 (CAS CATO-C4X-2226184)
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