Diethyl 2,5-di(thiophen-3-yl)terephthalate CAS 1443022-40-9
| CAS No. | 1443022-40-9 |
| Molecular Formula | C20H18O4S2 |
| Molecular Weight | 386.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Diethyl 2,5-di(thiophen-3-yl)terephthalate (CAS 1443022-40-9), molecular formula C20H18O4S2 and molecular weight 386.48 g/mol, is a CATO reference standard with documented purity and traceability.
Diethyl 2,5-di(thiophen-3-yl)terephthalate (C20H18O4S2) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Diethyl 2,5-di(thiophen-3-yl)terephthalate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H18O4S2 |
| Molecular Weight | 386.48 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Sulfur Atoms | 2 |
Related Diethyl Standards
- Diethyl 2,5-di(thiophen-2-yl)terephthalate (CAS 915224-39-4)
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- Diethyl 2,3-Bis(benzyloxy) Tartrate (CAS 77312-71-1)
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- Diethyl (acetylamino)(3-bromobenzyl)malonate (CAS 15017-44-4)
- Bis(diethyl-L-tartrate glycolato)diboron (CAS 480438-20-8)
- Diethyl (((2S,3S,5R)-5-(6-amino-9H-purin-9-yl)-2-(hydroxymethyl)tetrahydrofuran-3-yl)methyl)phosphonate (CAS 90012-88-7)
Recommended Standards
- 8-Benzyl-4-cyclohexanecarbonyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326812-72-9)
- (2-(4-(prop-2-yn-1-yloxy)phenyl)ethene-1,1,2-triyl)tribenzene (CAS 1644078-88-5)
- Prednisone Impurity N297 (CAS 1249-67-8)
- (R)-1-(1-(1-(Tert-butoxycarbonyl)piperidin-4-yl)ethyl)-2-methyl-1H-indole-3-carboxylic acid (CAS 1659300-60-3)
- methyl 3-(2,3-dihydro-1-benzofuran-5-yl)propanoate (CAS 1219101-96-8)
- 287389-35-9 DL-3-Hydroxybutyric acid-2,4-13C2 sodium salt Sodium DL-3-hydroxybutyrate-2,4-13C2 (CAS 287389-35-9)
- 2-(Azidomethyl)-6-chloro-1,3-benzoxazole (CAS 1158199-79-1)
- Aloin B (CAS 28371-16-6)
- Boc-α-(2-bromobenzyl)-DL-Pro-OH (CAS 351002-85-2)
- 2-Amino-3-[3-(aminomethyl)phenyl]propanoic acid (CAS 115511-07-4)
- (3-Benzyl-1,2,4-oxadiazol-5-yl)methanamine (CAS 876715-43-4)
- 2-(3-Ethoxy-4,5-difluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2121512-90-9)
- (S,R,S)-AHPC-acetamido-O-PEG2-C1-acid (CAS 2172820-10-7)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
Why CATO?
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