5,6-Dihydro-2H-thiopyran-3-carboxylic acid 1,1-dioxide CAS 167011-44-1
| CAS No. | 167011-44-1 |
| Molecular Formula | C6H8O4S |
| Molecular Weight | 176.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,6-Dihydro-2H-thiopyran-3-carboxylic acid 1,1-dioxide.
5,6-Dihydro-2H-thiopyran-3-carboxylic acid 1,1-dioxide (CAS 167011-44-1), molecular formula C6H8O4S and molecular weight 176.19 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, 5,6-Dihydro-2H-thiopyran-3-carboxylic acid 1,1-dioxide is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 176.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 5,6-Dihydro-2H-thiopyran-3-carboxylic acid 1,1-dioxide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H8O4S |
| Molecular Weight | 176.19 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.) | 2004 |
| Sulfur Atoms | 1 |
Related Dihydro Standards
- 3,4-Dihydro-2H-thiopyran-5-carboxylic acid 1,1-dioxide (CAS 99418-18-5)
- 6,7-Dihydro-5H-cyclopenta[d][1,2,4]triazolo[1,5-a]pyrimidin-8-ol (CAS 29814-17-3)
- 7,8-Dihydro-1H-pyrazolo[3,4-d]pyrrolo[1,2-a]pyrimidin-4(6H)-one (CAS 23942-30-5)
- 7,8-Dihydro-6H-cyclopenta[e][1,2,4]triazolo[4,3-b]pyridazin-9-ol (CAS 92259-42-2)
- N-(6,7-Dihydro-5H-pyrano[2,3-d]pyrimidin-2-yl)cyanamide (CAS 88696-62-2)
- 3-(2,3-dihydro-1-benzofuran-5-yl)propanal (CAS 1057670-88-8)
- 8-ethyl-3,4-dihydro-2H-1-benzopyran-4-one (CAS 1094750-05-6)
- 3,4-Dihydro-8-methoxynaphthalen-1(2H)-one (CAS 13185-18-7)
Recommended Standards
- 1-(4-Fluorophenyl)-5-methyl-1H-pyrazole (CAS 166588-11-0)
- N-(1,2-oxazol-5-ylmethyl)methanesulfonamide (CAS 1698589-38-6)
- 1-(4-Fluorophenyl)-3-methyl-1h-pyrazole (CAS 166588-10-9)
- 3-(3-Fluoropropoxy)cyclobutanecarboxylic acid (CAS 1707568-64-6)
- 5-(5-Bromo-2-hydroxy-3-methoxybenzylidene)-3-ethyl-2-thioxothiazolidin-4-one (CAS 359899-47-1)
- 3-Methoxy-2-methylpropane-1,2-diamine (CAS 1248944-55-9)
- 4GFU244C4J MRJ667KA5E BI55GG2WLI O0GN6F9B2Y 9004-67-5 P0NTE48364 NPU9M2E6L8 Z944H5SN0H Methylcellulose Cellulose, methyl ether Methyl cellulose Methylcellulose (4000 cps) Methylcellulose (4000 mpa.s) Methylcellulose [USP:INN:JAN] Adulsin Bagolax Bufapto methalose Bulkaloid CCRIS 3945 Celacol M Celacol M20 Celacol M 20P Celacol M450 Celacol MM Celacol MM 10P Cellapret Cellogel Cellogran Cellothyl Cellulose methyl Cellulose methyl ether Cellulose methylate Cellumeth Cethylose Cethytin Cologel Culminal K 42 Edisol M FEMA No. 2696 HSDB 1198 Hydrolose Mapolose M25 Mapolose 60SHS0 Mapolose 60SH50 MC 20000S MC 4000CP MC 4000 cP MCO 8000 Mellose Methocel Methocel A Methocel 10 Methocel 15 Methocel 181 Methocel 400 Methocel 400CPS Methocel 4000 Methocel 4000CPS Methocel 4000 CPS Methocel CHG Methocel MC Methocel MC 25 Methocel MC4000 Methocel MC 8000 Methocel SM 100 Methulose Methyl cellulose-A Methyl cellulose ether Methylcellulose (1/2%) Methylcellulosum [INN-Latin] Metilcellulosa [DCIT] Metilcelulosa [INN-Spanish] Metolose 60SH Metolose 60SH400 Metolose MC 8000 Metolose SM 100 Metolose SM 15 Metolose SM 4000 MMTs-BTR Napolone Nicel Rhomellose SM-4000 Syncelose Tylose Tylose A4S Tylose 444 Tylose MF Tylose MH1000 Tylose MH20 Tylose MH2000 Tylose MH300 Tylose MH300P Tylose MH4000 Tylose MH50 Tylose SAP Tylose SL Tylose SL 100 Tylose SL 400 Tylose SL 600 Tylose TWA USP methylcellulose Viscol Viscontran L52 Viscosol Walsroder MC 20000S Avicel SG Benecel M 0 Benecel M 02 Benecel MC 4000PS Benecel MO 42 Celacol M 2500 Celacol MMPR Celacol WA Cesca C 8556 Cesca MC 25S Cesca MC 400 Culminal MC Culminal MC 2000 Culminal MC 25S Culminal MC 3000P Culminal MC 3000PR Culminal MC 40 Culminal MC 60S Daicel 170 EMP-H Hi-SM 4000 Methylcellulosum Metilcellulosa Metilcelulosa UNII-O0GN6F9B2Y Methocel A 4000 UNII-4GFU244C4J UNII-BI55GG2WLI UNII-NPU9M2E6L8 UNII-P0NTE48364 UNII-MRJ667KA5E UNII-Z944H5SN0H (CAS 9004-67-5)
- 3-((3-Methoxypropyl)amino)thietane 1,1-dioxide (CAS 1865021-65-3)
- Bedaquiline impurity 39 (CAS 72543-44-3)
- 2-(3,5-Dimethylbenzoyl)-6-methoxypyridine (CAS 1187171-18-1)
- 1,3-Dimethoxy-N-methylpropan-2-amine (CAS 78531-30-3)
- 3-((2-Chloro-6-fluorobenzyl)thio)-5-propyl-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one (CAS 891126-99-1)
- (4-(Isopropoxycarbonyl)-2-nitrophenyl)boronic acid (CAS 1150114-61-6)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com