(S)-5-Oxotetrahydrofuran-3-carboxylic acid CAS 4694-66-0
| CAS No. | 4694-66-0 |
| Molecular Formula | C5H6O4 |
| Molecular Weight | 130.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies (S)-5-Oxotetrahydrofuran-3-carboxylic acid (CAS 4694-66-0), a certified reference material (molecular formula C5H6O4, MW 130.10 g/mol) for analytical method development and quality control.
(S)-5-Oxotetrahydrofuran-3-carboxylic acid (C5H6O4) contains a carbohydrate-derived structure. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C5H6O4 |
| Molecular Weight | 130.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
Related S Standards
- (R)-5-Oxotetrahydrofuran-3-carboxylic acid (CAS 5352-72-7)
- (S)-5-Oxotetrahydrofuran-2-carbonyl chloride (CAS 54848-33-8)
- 2-Oxotetrahydrofuran-3-carboxylic Acid (CAS 4360-91-2)
- 4-Oxotetrahydrofuran-2-carboxylic acid (CAS 2056072-58-1)
- 2-Methyl-4-oxotetrahydrofuran-3-carbonitrile (CAS 70097-89-1)
- (R)-5-Oxotetrahydrofuran-3-yl acetate (CAS 138666-02-1)
- (S)-5-Oxotetrahydrofuran-3-yl acetate (CAS 191403-65-3)
- (R)-2-(5-Oxotetrahydrofuran-2-yl)acetic acid (CAS 63597-98-8)
Recommended Standards
- (Z)-Pent-2-enedioic acid (CAS 505-36-2)
- (S)-(+)-5-Oxo-2-tetrahydrofurancarboxylic Acid (CAS 21461-84-7)
- 2,4-difluoro-5-methylpyrimidine (CAS 96548-89-9)
- 2,4-Difluoro-6-methylpyrimidine (CAS 696-80-0)
- 4-(Difluoromethyl)-5-iodo-6-(4-methylpiperazin-1-yl)pyrimidine (CAS 1706441-75-9)
- (3R,4R)-1-benzyl-4-(hydroxymethyl)piperidin-3-ol (CAS 39478-61-0)
- Methyl 4-methyl-3-(1H-pyrrol-1-yl)-1H-indole-2-carboxylate (CAS 890094-13-0)
- 4-(2-Chloro-6-fluorophenyl)-1-butene (CAS 951895-11-7)
- 3-(Trifluoromethyl)benzo[b]thiophene (CAS 120568-05-0)
- 3-Amino-2-(2-fluorophenyl)quinazolin-4(3H)-one (CAS 331719-48-3)
- (3,3,4,4,5,5,5-Heptafluoropentyl)trimethoxysilane (CAS 109134-39-6)
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- Tert-butyl (S)-4-(aminomethyl)-3,3-difluoropyrrolidine-1-carboxylate (CAS 2380445-82-7)
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