3-(Chlorosulfonyl)naphthalene-1-carboxylic acid CAS 1258652-21-9
| CAS No. | 1258652-21-9 |
| Molecular Formula | C11H7ClO4S |
| Molecular Weight | 270.69 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.
3-(Chlorosulfonyl)naphthalene-1-carboxylic acid (CAS 1258652-21-9) is a high-purity analytical reference standard with the molecular formula C11H7ClO4S and a molecular weight of 270.69 g/mol.
Based on its molecular formula C11H7ClO4S, 3-(Chlorosulfonyl)naphthalene-1-carboxylic acid contains a sulfone group, 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 270.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 3-(Chlorosulfonyl)naphthalene-1-carboxylic acid 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 | C11H7ClO4S |
| Molecular Weight | 270.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorosulfonyl Standards
- 5-(Chlorosulfonyl)-1-naphthoic acid (CAS 294840-12-3)
- Methyl 5-(chlorosulfonyl)-4-methoxythiophene-2-carboxylate (CAS 1384429-11-1)
- Methyl 5-(chlorosulfonyl)-4-methoxythiophene-3-carboxylate (CAS 175203-45-9)
- Methyl 5-(chlorosulfonyl)-2,4-difluorobenzoate (CAS 1099632-51-5)
- Methyl 3-(chlorosulfonyl)-2,5-difluorobenzoate (CAS 1154149-20-8)
- Methyl 3-(chlorosulfonyl)-2,6-difluorobenzoate (CAS 1154155-42-6)
- methyl 5-(chlorosulfonyl)-2,3-difluorobenzoate (CAS 1247485-41-1)
- Ethyl 2-(chlorosulfonyl)-4-methylthiazole-5-carboxylate (CAS 89694-92-8)
Recommended Standards
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- 2-((tert-Butoxycarbonyl)amino)-2-(thiophen-2-yl)acetic acid (CAS 28044-76-0)
- Methyl 2-[(3-methoxy-3-oxopropyl)amino]-2-methylpropanoate (CAS 106556-64-3)
- N-(7-(furan-2-carbonyl)-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-4-methylbenzenesulfonamide (CAS 886493-74-9)
- tert-Butyl 3-(4-methoxyphenyl)propanoate (CAS 85277-69-6)
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- Anthracene-9,10-diylbis(methylene) diacetate (CAS 10273-84-4)
- Urotensin II-Related Peptide (human, mouse, rat) (CAS 342878-90-4)
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