(S)-Ethyl 2-(((2S,6R)-5-oxo-2-(thiophen-2-yl)-1,4-thiazepan-6-yl)amino)-4-phenylbutanoate CAS 110143-57-2
| CAS No. | 110143-57-2 |
| Molecular Formula | C21H26N2O3S2 |
| Molecular Weight | 418.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-Ethyl 2-(((2S,6R)-5-oxo-2-(thiophen-2-yl)-1,4-thiazepan-6-yl)amino)-4-phenylbutanoate (CAS 110143-57-2) is a high-purity analytical reference standard with the molecular formula C21H26N2O3S2 and a molecular weight of 418.57 g/mol.
The molecular framework of (S)-Ethyl 2-(((2S,6R)-5-oxo-2-(thiophen-2-yl)-1,4-thiazepan-6-yl)amino)-4-phenylbutanoate (C21H26N2O3S2) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C21H26N2O3S2 |
| Molecular Weight | 418.57 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Recommended Standards
- 7,12 Diketolithocholic acid methyl ester (CAS 10538-66-6)
- (4R,4′R)-2,2′-(1-Butylpentylidene)bis[4,5-dihydro-4-phenyloxazole] (CAS 1246401-52-4)
- Valbenazine (CAS 1025504-45-3)
- 5β-PREGNAN-3α, 12α-DIOL-20-ONE DIACETATE (CAS 15991-93-2)
- 1-Fluoroethanesulfonamide (CAS 2763268-51-3)
- 4,4'-((1E,1'E)-[2,2'-Bipyridine]-4,4'-diylbis(ethene-2,1-diyl))bis(N,N-dimethylaniline) (CAS 166827-54-9)
- 6-Isopropyl-2-oxopiperidine-3-carboxylic acid (CAS 1516627-62-5)
- 3-Ethoxy-5-nitro-1H-indazole (CAS 1365939-15-6)
- Flurbiprofen Impurity 46 (CAS CATO-C4X-144446)
- Tetrahydroamentoflavone (CAS 48236-96-0)
- (8-benzyl-8-azabicyclo[3.2.1]oct-2-en-3-yl) trifluoromethanesulfonate (CAS 949902-02-7)
- tert-butyl 5-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate (CAS 1121057-77-9)
- 2-[(4-methanesulfonylphenyl)sulfanyl]benzoic acid (CAS 16185-13-0)
- Sperm Activating Peptide, Sea Urchin (CAS 140653-27-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com