6-(4-Hydroxy-2-methylphenyl)benzo[d]isothiazole-3-carboxylic acid CAS 959632-55-4
| CAS No. | 959632-55-4 |
| Molecular Formula | C15H11NO3S |
| Molecular Weight | 285.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 6-(4-Hydroxy-2-methylphenyl)benzo[d]isothiazole-3-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
6-(4-Hydroxy-2-methylphenyl)benzo[d]isothiazole-3-carboxylic acid (CAS 959632-55-4), molecular formula C15H11NO3S and molecular weight 285.32 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 6-(4-Hydroxy-2-methylphenyl)benzo[d]isothiazole-3-carboxylic acid (C15H11NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 6-(4-Hydroxy-2-methylphenyl)benzo[d]isothiazole-3-carboxylic 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 | C15H11NO3S |
| Molecular Weight | 285.32 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Hydroxy Standards
- (4r)-2-(4-Hydroxy-3,5-dimethoxyphenyl)thiazolidine-4-carboxylic acid (CAS 1014082-11-1)
- 2-(4-Hydroxy-3,5-dimethoxyphenyl)thiazolidine-4-carboxylic acid (CAS 1092935-95-9)
- (4S)-2-(4-hydroxy-3,5-dimethoxyphenyl)thiazolidine-4-carboxylic acid (CAS 1265908-21-1)
- 4-Hydroxy-1-[(4-methylphenyl)sulfonyl]-2-pyrrolidinecarboxylic acid (CAS 16257-64-0)
- 2-Hydroxy-5-(piperidin-1-ylsulfonyl)benzoic acid (CAS 91642-62-5)
- 3-Hydroxy-5,5-diphenyl-2-thioxooxazolidin-4-one (CAS 88051-63-2)
- 4-Hydroxy-1-tosylpyrrolidine-2-carboxylic acid (CAS 454473-66-6)
- Methyl 2-hydroxy-5-(pyrrolidine-1-sulfonyl)benzoate (CAS 893778-49-9)
Recommended Standards
- 6-((Naphthalen-1-ylmethyl)thio)-1,2,4-triazine-3,5(2H,4H)-dione (CAS 307508-95-8)
- 6-(Ethylsulfonyl)-2-(2-hydroxyethyl)-2H-1,4-benzoxazin-3(4H)-one (CAS 860648-57-3)
- 5-Phenyl-3-(phenylsulfonyl)isoxazole (CAS 72309-53-6)
- 6-(Ethylsulfonyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carbohydrazide (CAS 866051-06-1)
- 6-Chloro-3-iodo-4-methyl-1-trityl-1H-pyrrolo[3,2-c]pyridine (CAS 2443909-96-2)
- Ethyl 6-formyl-2,3-dimethoxybenzoate (CAS 104270-87-3)
- 2-[5-(2,4-Dichlorophenyl)-1H-pyrazol-1-yl]-4-(4-methoxyphenyl)-1,3-thiazole (CAS 956977-62-1)
- Pyrimido[4,5-b]quinolin-2-amine (CAS 582334-02-9)
- 2-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N,N'-bis[(4-methylphenyl)methyl]propanediamide (CAS 478063-76-2)
- Methyl 3-(2-nitrophenyl)benzoate (CAS 168619-44-1)
- 2,2-Dimethyl-3-(4-methylpiperidine-1-carbonyl)cyclopropane-1-carboxylic acid (CAS 1142215-23-3)
- 2-Despiperidyl-2-amino Repaglinide Methyl Ester (CAS 1246820-55-2)
- ethyl isocyanide DISCONTINUED (CAS 624-79-3)
- MOTS-c Peptide (CAS 1627580-64-6)
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