2,5-Difluoro-3,6-dimercaptoterephthalic acid CAS 2089430-11-3
| CAS No. | 2089430-11-3 |
| Molecular Formula | C8H4F2O4S2 |
| Molecular Weight | 266.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,5-Difluoro-3,6-dimercaptoterephthalic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,5-Difluoro-3,6-dimercaptoterephthalic acid (CAS 2089430-11-3) is a high-purity analytical reference standard with the molecular formula C8H4F2O4S2 and a molecular weight of 266.24 g/mol.
Structurally, 2,5-Difluoro-3,6-dimercaptoterephthalic acid (C8H4F2O4S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 266.24 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 | C8H4F2O4S2 |
| Molecular Weight | 266.24 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F-containing |
| Sulfur Atoms | 2 |
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Recommended Standards
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- 6-Methoxy-3(2H)-pyridazinone (CAS 1703-10-2)
- 1-[(2-Fluorophenyl)methyl]-2-methylpiperazine (CAS 1226160-96-8)
- 2,7-Dimethyl-2,5,6,7-tetrahydropyrazolo[4,3-b][1,4]oxazine (CAS 92616-04-1)
- (-)-(3AR,6AR)-TETRAHYDRO-2,2-DIMETHYL-4H-CYCLOPENTA-1,3-DIOXOL-4-ONE (CAS 148743-86-6)
- 6-Amino-5-(benzylideneamino)-1,3-dimethylpyrimidine-2,4(1H,3H)-dione (CAS 60228-89-9)
- 6-Chloro-7-isobutoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 1352542-21-2)
- N-(azetidin-3-yl)-N-methylmethanesulfonamide; trifluoroacetic acid (CAS 1619991-24-0)
- FMRF-Like Neuropeptide (CAS 121801-61-4)
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