1-(2,3-Dihydro-1h-inden-5-yl)ethane-1-sulfonyl chloride CAS 1251270-66-2
| CAS No. | 1251270-66-2 |
| Molecular Formula | C11H13ClO2S |
| Molecular Weight | 244.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(2,3-Dihydro-1h-inden-5-yl)ethane-1-sulfonyl chloride.
CATO supplies 1-(2,3-Dihydro-1h-inden-5-yl)ethane-1-sulfonyl chloride (CAS 1251270-66-2), a certified reference material (molecular formula C11H13ClO2S, MW 244.74 g/mol) for analytical method development and quality control.
Structurally, 1-(2,3-Dihydro-1h-inden-5-yl)ethane-1-sulfonyl chloride (C11H13ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 244.74 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H13ClO2S |
| Molecular Weight | 244.74 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dihydro Standards
- 2-(2,3-dihydro-1H-inden-1-yl)ethane-1-sulfonyl chloride (CAS 1781060-23-8)
- 2-(2,3-dihydro-1H-inden-2-yl)ethane-1-sulfonyl chloride (CAS 1803586-52-8)
- 2,3-dihydro-1-benzoxepine-4-sulfonyl chloride (CAS 1602704-82-4)
- 4-Methyl-1,3-dihydro-2H-imidazole-2-thione (CAS 3247-70-9)
- 1-{2,3-Dihydro-1H-spiro[isoquinoline-4,4'-piperidine]-2-yl}ethan-1-one (CAS 159634-82-9)
- 1'-Methyl-6,7-dihydro-2H,5H-spiro[furo[2,3-f]indole-3,4'-piperidine] (CAS 180082-56-8)
- 1-(2',3'-Dihydro-1'H-spiro[piperidine-4,4'-quinolin]-1'-yl)ethanone (CAS 947724-87-0)
- 7-[(4-Oxo-4,5-dihydro-1,3-thiazol-2-yl)amino]heptanoic acid (CAS 797027-59-9)
Recommended Standards
- 6,7,8,9-Tetrahydro-5h-benzo[7]annulene-5-sulfonyl chloride (CAS 1251102-09-6)
- 1-(4-Chlorophenyl)-2-((3-hydroxypropyl)thio)ethan-1-one (CAS 130235-09-5)
- Ethyl 2-((2-chlorophenyl)thio)propanoate (CAS 1249910-63-1)
- 2-(2-Butoxyethoxy)ethane-1-sulfonyl chloride (CAS 1339635-79-8)
- 1-(Furan-2-carbonyl)-4-(2,4,5-trichlorobenzenesulfonyl)piperazine (CAS 669749-42-2)
- 6-Cyclopropyl-3-ethylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1263213-21-3)
- (1e)-1-Bromocyclooct-1-ene (CAS 61815-42-7)
- 5-(Trifluoromethyl)-1,2,3,4-tetrahydronaphthol (CAS 1202577-72-7)
- 3-Methyl-5-(thiophen-2-yl)-1H-pyrrole-2-carboxylic acid (CAS 2090492-89-8)
- Ethyl 5-(trifluoromethoxy)benzofuran-2-carboxylate (CAS 896732-44-8)
- 4-nitro-Phen-2,6-d2-ol (CAS 90889-43-3)
- N-(3-fluorophenyl)-3-nitrobenzamide (CAS 167565-76-6)
- (E)-2-((5-bromo-2-hydroxybenzylidene)amino)isoindoline-1,3-dione (CAS 98841-63-5)
- Tau Peptide (307-321) trifluoroacetate salt (CAS 330456-50-3)
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