Ethyl 5-acetyl-3-hydroxy-4-methylthieno[2,3-b]thiophene-2-carboxylate CAS 555154-27-3
| CAS No. | 555154-27-3 |
| Molecular Formula | C12H12O4S2 |
| Molecular Weight | 284.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 284.35 g/mol gives Ethyl 5-acetyl-3-hydroxy-4-methylthieno[2,3-b]thiophene-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 5-acetyl-3-hydroxy-4-methylthieno[2,3-b]thiophene-2-carboxylate (CAS 555154-27-3) is a high-purity analytical reference standard with the molecular formula C12H12O4S2 and a molecular weight of 284.35 g/mol.
The molecular framework of Ethyl 5-acetyl-3-hydroxy-4-methylthieno[2,3-b]thiophene-2-carboxylate (C12H12O4S2) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Ethyl 5-acetyl-3-hydroxy-4-methylthieno[2,3-b]thiophene-2-carboxylate 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 | C12H12O4S2 |
| Molecular Weight | 284.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Sulfur Atoms | 2 |
Recommended Standards
- Ethyl 4-(benzyloxy)-3,5-dimethylbenzoate (CAS 773135-42-5)
- Ethyl 8-methyl-4-(pyrrolidin-1-yl)quinoline-3-carboxylate (CAS 478248-18-9)
- Ethyl 3-amino-4-((1-phenylethyl)amino)benzoate (CAS 890093-77-3)
- Methyl (2E)-3-(6-butoxynaphthalen-2-yl)prop-2-enoate (CAS 551931-31-8)
- Prion Protein (118-135) (human) (H-4206.0001) (CAS 202121-03-7)
- 629-05-0 1-Octyne Oct-1-yne 4-01-00-01034 (Beilstein Handbook Reference) BRN 1734494 EINECS 211-069-3 Hexylacetylene EC 211-069-3 (CAS 629-05-0)
- 3-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pentanedinitrile (CAS 2304635-62-7)
- 8-Bromo-2-chloroquinoline (CAS 163485-86-7)
- (2E)-1-(2,5-Dimethoxyphenyl)-3-(2-fluorophenyl)prop-2-en-1-one (CAS 1004035-72-6)
- 5-Chloro-4-(methylamino)pyridine-3-sulfonic acid (CAS 1352531-67-9)
- 1-(BEnzyloxy)-2-chlorobenzene (CAS 949-38-2)
- (R)-Bupivacaine HCl (CAS 27262-46-0)
- methyl 2-tert-butyl-5-hydroxy-4-methylthieno[2,3-d]pyrimidine-6-carboxylate (CAS 941378-53-6)
- Peptide Impurity 28 (CAS 1350456-64-2)
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