4-(4-Fluorophenyl)-1,2,3-thiadiazole-5-carboxylic acid CAS 933709-92-3
| CAS No. | 933709-92-3 |
| Molecular Formula | C9H5FN2O2S |
| Molecular Weight | 224.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(4-Fluorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 933709-92-3) is a high-purity analytical reference standard with the molecular formula C9H5FN2O2S and a molecular weight of 224.21 g/mol.
4-(4-Fluorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (C9H5FN2O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C9H5FN2O2S |
| Molecular Weight | 224.21 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 DMSO, DMF, methanol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluorophenyl Standards
- 5-(4-Fluorophenyl)-1,3,4-thiadiazole-2-carboxylic acid (CAS 1260672-44-3)
- 5-(3-Fluorophenyl)-1,3,4-thiadiazole-2-carboxylic acid (CAS 1388057-04-2)
- 5-(2-Fluorophenyl)-1,3,4-thiadiazole-2-carboxylic acid (CAS 1388071-20-2)
- 4-(3-Fluorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 1495844-95-5)
- 4-(2-Fluorophenyl)-1,2,3-thiadiazole-5-carboxylic acid (CAS 183304-92-9)
- Methyl 3-(4-fluorophenyl)-1H-pyrazole-4-carboxylate (CAS 1017784-36-9)
- 2-(4-Fluorophenyl)quinazoline (CAS 1208259-07-7)
- 2-(2-Fluorophenyl)quinazoline (CAS 1222094-31-6)
Recommended Standards
- 4-(3-nitrophenyl)benzonitrile (CAS 39117-72-1)
- 4-(Isopropylamino)-3-nitrobenzoic acid (CAS 284672-95-3)
- 4-(2-Hydroxy-5-methoxyphenyl)-4-oxobutanoic acid (CAS 75501-54-1)
- 4,5,6-Trimethoxy-2-benzofuran-1(3H)-one (CAS 4087-80-3)
- 2-Amino-N,N,3-trimethyl-butanamide (CAS 230643-41-1)
- 3-Fluoro-4-(2-(2-methoxyethoxy)ethoxy)aniline (CAS 946698-92-6)
- Tris(2-ethylhexyl)phosphine oxide (CAS 2785-32-2)
- Ethyl 3-chlorobenzo[4,5]imidazo[1,2-a]pyrimidine-2-carboxylate (CAS 1800373-06-1)
- [3-Amino-4-(methoxymethyl)-6-methylfuro[2,3-b]pyridin-2-yl](phenyl)methanone (CAS 330558-93-5)
- 6-methoxy-1,3-benzothiazole-2-carbaldehyde (CAS 123511-58-0)
- Methyl 2-amino-4-(pyridin-3-yl)thiophene-3-carboxylate (CAS 438230-48-9)
- 1-((2-Nitrophenyl)sulfonyl)azetidin-3-amine (CAS 1031692-00-8)
- Degarelix Acetate (CAS 934016-19-0)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
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