6,6-Dimethyl-5-oxothiomorpholine-3-carboxylic acid CAS 14226-94-9
| CAS No. | 14226-94-9 |
| Molecular Formula | C7H11NO3S |
| Molecular Weight | 189.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 6,6-Dimethyl-5-oxothiomorpholine-3-carboxylic acid (C7H11NO3S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
6,6-Dimethyl-5-oxothiomorpholine-3-carboxylic acid (CAS 14226-94-9), molecular formula C7H11NO3S and molecular weight 189.23 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C7H11NO3S |
| Molecular Weight | 189.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dimethyl Standards
- (S)-6,6-dimethyl-5-oxothiomorpholine-3-carboxylic acid (CAS 79438-16-7)
- 2-(3,5-Dimethyl-1H-pyrazol-1-yl)pyrimidin-5-amine (CAS 1251254-56-4)
- 6-(1,3-Dimethyl-1h-pyrazol-4-yl)pyridazin-3-amine (CAS 1483414-12-5)
- 2,3-Dimethyl-5-(1H-tetrazol-1-yl)aniline (CAS 954328-84-8)
- n-(1,3-Dimethyl-1h-pyrazol-5-yl)methanesulfonamide (CAS 1480380-11-7)
- 2,3-Dimethyl-1H-indole-6-carboxylic acid (CAS 103986-06-7)
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Recommended Standards
- 3-thia-9-azabicyclo[3.3.1]nonane-3,3,7-trione (CAS 1419209-32-7)
- tert-Butyl 3-(fluoromethyl)azetidine-1-carboxylate (CAS 1443983-85-4)
- 2-(Thiophen-3-yl)isonicotinaldehyde (CAS 1403932-10-4)
- 9-hydroxy-4$l^{6}-thia-5-azatricyclo[4.2.1.0^{3,7}]nonane-4,4-dione (CAS 1453422-57-5)
- 3-[5-(Hydroxymethyl)-2-furyl]benzoic acid (CAS 679821-90-0)
- N-[(2,3-Dihydro-1,4-benzodioxin-6-yl)sulfonyl]valine (CAS 1396965-93-7)
- Ethyl 7-Nitro-4-oxo-1,4-dihydroquinoline-3-carboxylate (CAS 69994-70-3)
- Piperacillin Impurity 31 (CAS CATO-C4X-173231)
- 3-((2,6-Dichlorobenzyl)thio)-5-(thiophen-2-yl)-4H-1,2,4-triazol-4-amine (CAS 477863-48-2)
- Acid-PEG25-NHS ester (CAS 2563872-17-1)
- 3-(2,4,6-trimethylphenoxy)propane-1,2-diol (CAS 69557-50-2)
- 3-(4-Acetoxyphenyl)-2-methyl-1-propene (CAS 890097-89-9)
- 5-(Tert-butyl)-4-phenylthiazol-2-amine (CAS 101853-12-7)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
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