2-Chloro-N-[3-(4-methoxy-benzoyl)-4,5,6,7-tetrahydro-benzo[b]thiophen-2-yl]-acetamide CAS 919023-03-3
| CAS No. | 919023-03-3 |
| Molecular Formula | C18H18ClNO3S |
| Molecular Weight | 363.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-N-[3-(4-methoxy-benzoyl)-4,5,6,7-tetrahydro-benzo[b]thiophen-2-yl]-acetamide (CAS 919023-03-3) is a high-purity analytical reference standard with the molecular formula C18H18ClNO3S and a molecular weight of 363.86 g/mol.
2-Chloro-N-[3-(4-methoxy-benzoyl)-4,5,6,7-tetrahydro-benzo[b]thiophen-2-yl]-acetamide (C18H18ClNO3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C18H18ClNO3S |
| Molecular Weight | 363.86 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-n-[3-(2-methoxybenzoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]acetamide (CAS 459825-43-5)
- 4-Chloro-n-(2-(diisopropylamino)ethyl)-3-nitrobenzenesulfonamide (CAS 744242-80-6)
- N-(5-Chloro-2-morpholinophenyl)-2-(methylthio)nicotinamide (CAS 794580-12-4)
- 4-Chloro-2,6-bis[(4S)-4,5-dihydro-4-[(1S)-1-methylpropyl]-2-oxazolyl]pyridine (CAS 1282036-86-5)
- 4-Chloro-2,6-bis[(4S)-4-(1,1-dimethylethyl)-4,5-dihydro-2-oxazolyl]pyridine (CAS 825613-46-5)
- 7-Chloro-9-(4-phenylpiperazin-1-yl)-2,3-dihydro-1H-cyclopenta[b]quinoline (CAS 40527-93-3)
- 7-Chloro-4-((S)-3-methylmorpholin-4-yl)-2-((S)-3-methylmorpholin-4-yl)pyrido[2,3-d]pyrimidine (CAS 1009303-44-9)
- N-(3-Chloro-4-fluorobenzyl)-4-ethyl-2-(1H-pyrrol-1-yl)thiazole-5-carboxamide (CAS 1243072-49-2)
Recommended Standards
- 2-(4-(Benzyloxy)-2-chlorobenzoyl)-N-ethylhydrazine-1-carbothioamide (CAS 478039-97-3)
- Methyl 2-[(chloroacetyl)amino]-6-phenyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 905011-06-5)
- (2Z)-1-(4-Chlorophenyl)-3-(dimethylamino)-2-(4-methylbenzenesulfonyl)prop-2-en-1-one (CAS 338417-78-0)
- N-([1,1'-biphenyl]-2-yl)-3-chlorobenzo[b]thiophene-2-carboxamide (CAS 332156-26-0)
- 2-Butenedioic acid (2Z)-, 1,4-dioctyl ester, polymer with ethenyl acetate and 2-ethylhexyl 2-propenoate (CAS 25280-35-7)
- 4-(2-Methylphenoxymethyl)-1,3-thiazol-2-amine (CAS 879145-29-6)
- 4-Fluoro-4'-nitro-3-(trifluoromethyl)-1,1'-biphenyl (CAS 646054-51-5)
- 2-(trans-4-(4-(5-((6-(Trifluoromethyl)pyridin-3-yl)amino)pyridin-2-yl)phenyl)cyclohexyl)acetic acid (CAS 956136-95-1)
- 6-Methyl-2,3-diphenyl-1H-indole (CAS 54879-92-4)
- 8-Chloro-1-ethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 51395-55-2)
- 2-Amino-6,7-dihydrothiazolo[5,4-c]pyridin-4(5H)-one (CAS 26493-11-8)
- 2-Fluoro-5-hydroxybenzothiazole (CAS 1261564-25-3)
- 3-(2,4-Dichloro-5-fluorophenyl)-1-(4-fluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 618101-65-8)
- Mitogenic Pentapeptide (CAS 87173-03-3)
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