PPX0648643 7789-21-1 Fluorosulfonic acid Fluosulfonic acid Fluorosulfuric acid Fluorosulphuric acid EINECS 232-149-4 Fluorosulfuric acid (HSO3F) Fluosulfuric acid HSDB 467 Monofluorosulfuric acid UNII-PPX0648643 EC 232-149-4 Fluorosulfonic acid [UN1777] [Corrosive] UN1777 CAS 7789-21-1
| CAS No. | 7789-21-1 |
| Molecular Formula | HFO3S |
| Molecular Weight | 100.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of PPX0648643 7789-21-1 Fluorosulfonic acid Fluosulfonic acid Fluorosulfuric acid Fluorosulphuric acid EINECS 232-149-4 Fluorosulfuric acid (HSO3F) Fluosulfuric acid HSDB 467 Monofluorosulfuric acid UNII-PPX0648643 EC 232-149-4 Fluorosulfonic acid [UN1777] [Corrosive] UN1777 is closely related to a sulfone group, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
PPX0648643 7789-21-1 Fluorosulfonic acid Fluosulfonic acid Fluorosulfuric acid Fluorosulphuric acid EINECS 232-149-4 Fluorosulfuric acid (HSO3F) Fluosulfuric acid HSDB 467 Monofluorosulfuric acid UNII-PPX0648643 EC 232-149-4 Fluorosulfonic acid [UN1777] [Corrosive] UN1777 (CAS 7789-21-1) is a high-purity analytical reference standard with the molecular formula HFO3S and a molecular weight of 100.07 g/mol.
The molecular framework of PPX0648643 7789-21-1 Fluorosulfonic acid Fluosulfonic acid Fluorosulfuric acid Fluorosulphuric acid EINECS 232-149-4 Fluorosulfuric acid (HSO3F) Fluosulfuric acid HSDB 467 Monofluorosulfuric acid UNII-PPX0648643 EC 232-149-4 Fluorosulfonic acid [UN1777] [Corrosive] UN1777 (HFO3S) is characterized by a sulfone group, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | HFO3S |
| Molecular Weight | 100.07 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- Maleic-2,3-d2 Anhydride (CAS 33225-51-3)
- Minodronic Impurity 10 (CAS 4437-06-3)
- Furan-2,4(3H,5H)-dione (CAS 4971-56-6)
- Minodronic Impurity 30 (CAS 1575-59-3)
- 4-Mercaptobenzenesulfonic Acid (CAS 7134-41-0)
- 757239-76-2 1-Oxa-8-azaspiro[4.5]decan-3-ol DTXSID60665396 (CAS 757239-76-2)
- Ethyl 4-hydroxy-2-(methylsulfonyl)pyrimidine-5-carboxylate (CAS 1073372-19-6)
- 3-Amino-N-(4-methyl-1,3-benzothiazol-2-yl)-4-(trifluoromethyl)-5H,6H,7H,8H-thieno[2,3-b]quinoline-2-carboxamide (CAS 664999-47-7)
- Trazodone Impurity 36 (CAS CATO-C4X-177236)
- Ethyl 3-(2-hydroxyethyl)-2-oxo-5-propyltetrahydrofuran-3-carboxylate (CAS 82672-10-4)
- (E)-2-(1-(Pyridin-2-yl)ethylidene)hydrazinecarbothioamide (CAS 142564-62-3)
- 4-((3,4-Dichlorophenyl)thio)-N,N-dimethyl-6-(trifluoromethyl)pyrimidin-2-amine (CAS 338792-25-9)
- (S)-tert-Butyl 3-(2-ethoxy-2-oxoethoxy)pyrrolidine-1-carboxylate (CAS 1024038-29-6)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
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