Thieno[2,3:4,5]benzo[1,2-d][1,3]dioxole-6-carboxylic acid methyl ester CAS 19492-85-4
| CAS No. | 19492-85-4 |
| Molecular Formula | C11H8O4S |
| Molecular Weight | 236.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Thieno[2,3:4,5]benzo[1,2-d][1,3]dioxole-6-carboxylic acid methyl ester (CAS 19492-85-4), molecular formula C11H8O4S and molecular weight 236.24 g/mol, is a CATO reference standard with documented purity and traceability.
Thieno[2,3:4,5]benzo[1,2-d][1,3]dioxole-6-carboxylic acid methyl ester (C11H8O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, 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.
As a certified reference material (CRM), Thieno[2,3:4,5]benzo[1,2-d][1,3]dioxole-6-carboxylic acid methyl ester 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 | C11H8O4S |
| Molecular Weight | 236.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 1 |
Related Thieno Standards
- Thieno[3,2-b][1]benzothiophene-2-carboxylic acid (CAS 30126-05-7)
- Phenyl(thieno[3,4-d][1,3]dioxol-4-yl)methanol (CAS 327070-52-0)
- Methyl thieno[2',3':4,5]imidazo[2,1-b]thiazole-2-carboxylate (CAS 477851-85-7)
- Thieno[3,2-b]thiophene-2-sulfonyl chloride (CAS 2503207-46-1)
- Thieno[3,2-b]thiophene-3-sulfonyl chloride (CAS 2657622-90-5)
- Thieno[2,3-c]pyridine-2-sulfonyl chloride (CAS 1191545-48-8)
- Thieno[3,2-b]pyridine-6-sulfonyl chloride (CAS 1306606-64-3)
- thieno[2,3-b]pyridine-5-sulfonyl chloride (CAS 1864060-96-7)
Recommended Standards
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- 2-[4-(2,6-difluorophenyl)-1,3-thiazol-2-yl]acetonitrile (CAS 184839-29-0)
- 1-(2-Fluorophenyl)-3-oxocyclohexanecarboxylic acid (CAS 1956370-66-3)
- 2-((Benzo[d][1,3]dioxol-5-ylmethyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 380178-21-2)
- 2-(1-(Tert-butyl)piperidin-4-yl)ethan-1-amine (CAS 1251313-77-5)
- tert-Butyl 6-bromo-3-oxospiro[2H-indene-1,4'-piperidine]-1'-carboxylate (CAS 1160247-43-7)
- 3-(benzyloxy)-2-methylpropan-1-amine (CAS 114377-41-2)
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