5-Sulfosalicylic Acid Dihydrate CAS 5965-83-3
| CAS No. | 5965-83-3 |
| Molecular Formula | C7H6O6S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Sulfosalicylic Acid Dihydrate is closely related to a carbohydrate-derived structure, a sulfone group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Sulfosalicylic Acid Dihydrate (CAS 5965-83-3), molecular formula C7H6O6SH2O and molecular weight 236.19 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Sulfosalicylic Acid Dihydrate (C7H6O6SH2O) contains a carbohydrate-derived structure, a sulfone group. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 236.19 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C7H6O6S 2*H2O |
| Molecular Weight | 236.19 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Recommended Standards
- Methyl 4-Fluoro-β-methyl-benzenepropanoate (CAS 24254-64-6)
- N-(4-acetylphenyl)-2-((4-ethyl-5-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 333411-40-8)
- 2-(1-Azetidinyl)-5-bromopyrimidine (CAS 850349-22-3)
- 2-(Bromomethyl)-5-fluorobenzaldehyde (CAS 945995-09-5)
- (E)-1-butyl-2-((2-hydroxy-3-methoxybenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile (CAS 478032-84-7)
- 1-(2,6-Difluorophenyl)cyclobutanemethanamine Hydrochloride (CAS 1909335-91-6)
- H-Ala-βNA (CAS 720-82-1)
- Methyl 2-(4-aminotetrahydro-2H-thiopyran-4-yl)acetate (CAS 742048-28-8)
- 4-(3,4-Dimethoxyphenyl)butanoyl chloride (CAS 348143-75-9)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
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