2,2-Dimethyltetrahydro-4H-thiopyran-4-one 1,1-dioxide CAS 90271-21-9
| CAS No. | 90271-21-9 |
| Molecular Formula | C7H12O3S |
| Molecular Weight | 176.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,2-Dimethyltetrahydro-4H-thiopyran-4-one 1,1-dioxide (CAS 90271-21-9), molecular formula C7H12O3S and molecular weight 176.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 2,2-Dimethyltetrahydro-4H-thiopyran-4-one 1,1-dioxide is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 176.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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 | C7H12O3S |
| Molecular Weight | 176.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1982 |
| Sulfur Atoms | 1 |
Related Dimethyltetrahydro Standards
- 2,6-Dimethyltetrahydro-4H-thiopyran-4-one 1,1-dioxide (CAS 56580-78-0)
- 2,2-Dimethyltetrahydro-2H-pyran-4-carbothioamide (CAS 84125-26-8)
- N1-(2,2-dimethyltetrahydro-2H-pyran-4-yl)ethane-1,2-diamine (CAS 1010885-69-4)
- 2-(2,6-Dimethyltetrahydro-2H-pyran-4-yl)acetic acid (CAS 1215417-58-5)
- 2-(2,2-Dimethyltetrahydro-2H-pyran-4-yl)acetic acid (CAS 14390-07-9)
- 2-(6,6-Dimethyltetrahydro-2H-pyran-2-yl)acetic acid (CAS 1674389-23-1)
- Methyl 2,2-dimethyltetrahydro-2H-pyran-4-carboxylate (CAS 52916-17-3)
- 1-(2,2-Dimethyltetrahydro-2H-pyran-4-yl)propan-1-one (CAS 77642-82-1)
Recommended Standards
- 2-(Benzo[b]thiophen-3-yl)acetaldehyde (CAS 874338-74-6)
- 2-(((Tetrahydrofuran-2-yl)methyl)thio)acetic acid (CAS 933757-92-7)
- 2-Methyl-1-benzothiophene-3-carbaldehyde (CAS 30446-99-2)
- 1-Mercaptonaphthalen-2-ol (CAS 29601-60-3)
- 2-Chloro-5-(trifluoromethoxy)benzaldehyde (CAS 468075-02-7)
- 2-(4,5,6,7-tetrahydro-1-benzothiophen-2-ylformamido)acetic acid (CAS 1019127-35-5)
- 2-(3,5-Dimethyladamantan-1-yl)acetic acid (CAS 14202-14-3)
- 1,2,3,4,5,6-Hexahydrobenzo[b]azocine (CAS 7124-93-8)
- 5-(2,5-Dimethylfuran-3-yl)-1,3,4-oxadiazol-2-amine (CAS 926218-66-8)
- Aclerastide (CAS 227803-63-6)
- 1,2,5-oxadiazol-3-ylmethyl acetate (CAS 79552-34-4)
- (2S,4S)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-4-(methylthio)pyrrolidine-2-carboxylic acid (CAS 1887209-51-9)
- Amodiaquine Impurity 8 (CAS CATO-C4X-24718)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
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