(1,1-dioxido-2H-naphtho[1,8-cd]isothiazol-2-yl)acetic acid CAS 857041-85-1
| CAS No. | 857041-85-1 |
| Molecular Formula | C12H9NO4S |
| Molecular Weight | 263.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
(1,1-dioxido-2H-naphtho[1,8-cd]isothiazol-2-yl)acetic acid (CAS 857041-85-1), molecular formula C12H9NO4S and molecular weight 263.27 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H9NO4S, (1,1-dioxido-2H-naphtho[1,8-cd]isothiazol-2-yl)acetic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 263.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures (1,1-dioxido-2H-naphtho[1,8-cd]isothiazol-2-yl)acetic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H9NO4S |
| Molecular Weight | 263.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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- Ethyl 2-(1,1-dioxido-2H-benzo[e][1,2,4]thiadiazin-3-yl)acetate (CAS 53971-22-5)
- 1,1-Dioxido-3,6-dihydro-2H-thiopyran-4-boronic Acid Pinacol Ester (CAS 1370535-33-3)
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Recommended Standards
- 5-Amino-1-[4-(fluoromethyl)phenyl]-1H-pyrazole-4-carboxylicacidethylester (CAS 187998-54-5)
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- 2-azido-1-[4-(4-fluorophenyl)piperazin-1-yl]ethan-1-one (CAS 1858250-34-6)
- (4-Methoxy-3-nitrophenyl)(thiophen-2-yl)methanone (CAS 66938-50-9)
- 3-(2-fluoro-4-methoxyphenyl)propanenitrile (CAS 1803727-00-5)
- trimethylpyrazine-2-carboxylic acid (CAS 186534-01-0)
- tert-Butyl (S)-2-acetoxypropanoate (CAS 120444-05-5)
- 1-tert-Butyl 3-ethyl 2,3-dihydro-1H-pyrrole-1,3-dicarboxylate (CAS 1823240-63-6)
- (1S,2S)-1,2-Bis(3,5-dimethylphenyl)-N1,N2-dimethylethane-1,2-diamine (CAS 220665-49-6)
- Methyl (1R,8S,9s,Z)-bicyclo[6.1.0]Non-4-ene-9-carboxylate (CAS 61452-51-5)
- 2,4-Dimethoxy-5-methylpyrimidine (CAS 5151-34-8)
- ([2,5-Dimethyl-1-(pyridin-3-ylmethyl)-1h-pyrrol-3-yl]methyl)amine (CAS 1177327-48-8)
- 7-Hydroxy-4-(trifluoromethyl)coumarin (CAS 575-03-1)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
Why CATO?
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