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ChemicalBook >> CAS DataBase List >> 3,4-Dihydroxy-thiophene-2,5-dicarboxylic acid diethyl ester

3,4-Dihydroxy-thiophene-2,5-dicarboxylic acid diethyl ester

3,4-Dihydroxy-thiophene-2,5-dicarboxylic acid diethyl ester price.
  • $10 - $1433
  • Product name: 3,4-Dihydroxy-thiophene-2,5-dicarboxylic acid diethyl ester
  • CAS: 1822-66-8
  • MF: C10H12O6S
  • MW: 260.27
  • EINECS:
  • MDL Number:MFCD03094035
  • Synonyms:DIETHYL 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLATE;3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC;3,4-dihydroxythiophene-2,5-dicarboxylic acid diethyl ester solution;2,5-Bis(ethoxycarbonyl)thiophene-3,4-diol;2,5-Diethoxycarbonyl-3,4-dihydroxythiophene;3,4-Dihydroxy-2,5-dicarbethoxythiophene;Dicetol;Diethyl 3,4-dihydroxy-2,5-thiophenedicarboxylate
Price43 Properties Safety Information Description
43 prices
Selected condition：
Brand
  • aablocks
  • AK Scientific
  • Alichem
  • Ambeed
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Arctom
  • Chemenu
  • Crysdot
  • J&W Pharmlab
  • Matrix Scientific
  • SynQuest Laboratories
  • TRC
  • Usbiological
Package
  • 5MG
  • 250mg
  • 500mg
  • 1g
  • 5.00g
  • 5g
  • 10g
  • 25.00g
  • 25g
  • 100.00g
  • 100g
  • 500g
  • Manufactureraablocks
  • Product numberAA0023EG
  • Product descriptionDiethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging1g
  • Price$12
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0023EG
  • Product descriptionDiethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging250mg
  • Price$10
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0023EG
  • Product descriptionDiethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging5g
  • Price$28
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA0023EG
  • Product descriptionDiethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging25g
  • Price$68
  • Updated2026-05-28
  • Buy
  • ManufacturerAK Scientific
  • Product numberZ5479
  • Product description3,4-Dihydroxythiophene-2,5-dicarboxylicaciddiethylester
  • Packaging1g
  • Price$89
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberZ5479
  • Product description3,4-Dihydroxythiophene-2,5-dicarboxylicaciddiethylester
  • Packaging5g
  • Price$165
  • Updated2021-12-16
  • Buy
  • ManufacturerAlichem
  • Product number1822668
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate
  • Packaging5g
  • Price$438.18
  • Updated2021-12-16
  • Buy
  • ManufacturerAlichem
  • Product number1822668
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate
  • Packaging10g
  • Price$729.63
  • Updated2021-12-16
  • Buy
  • ManufacturerAlichem
  • Product number1822668
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate
  • Packaging25g
  • Price$1313
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA255964
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging25g
  • Price$158
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA255964
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging5g
  • Price$56
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA255964
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging250mg
  • Price$11
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA255964
  • Product descriptionDiethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95%
  • Packaging1g
  • Price$20
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0298304
  • Product description3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER 95.00%
  • Packaging5MG
  • Price$497.48
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR16953
  • Product descriptionDiethyl 3,4-dihydroxythiophene-2,5-dicarboxylate >97%
  • Packaging500g
  • Price$1433
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR16953
  • Product descriptionDiethyl 3,4-dihydroxythiophene-2,5-dicarboxylate >97%
  • Packaging250mg
  • Price$21
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA0023EG Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95% 1g $12 2026-05-28 Buy
aablocks AA0023EG Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95% 250mg $10 2026-05-28 Buy
aablocks AA0023EG Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95% 5g $28 2026-05-28 Buy
aablocks AA0023EG Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate 95% 25g $68 2026-05-28 Buy
AK Scientific Z5479 3,4-Dihydroxythiophene-2,5-dicarboxylicaciddiethylester 1g $89 2021-12-16 Buy
AK Scientific Z5479 3,4-Dihydroxythiophene-2,5-dicarboxylicaciddiethylester 5g $165 2021-12-16 Buy
Alichem 1822668 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 5g $438.18 2021-12-16 Buy
Alichem 1822668 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 10g $729.63 2021-12-16 Buy
Alichem 1822668 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 25g $1313 2021-12-16 Buy
Ambeed A255964 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95% 25g $158 2021-12-16 Buy
Ambeed A255964 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95% 5g $56 2021-12-16 Buy
Ambeed A255964 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95% 250mg $11 2021-12-16 Buy
Ambeed A255964 Diethyl3,4-dihydroxythiophene-2,5-dicarboxylate 95% 1g $20 2021-12-16 Buy
American Custom Chemicals Corporation CHM0298304 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER 95.00% 5MG $497.48 2021-12-16 Buy
Apolloscientific OR16953 Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate >97% 500g $1433 2026-06-04 Buy
Apolloscientific OR16953 Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate >97% 250mg $21 2026-06-04 Buy
Next Last

Properties

Melting point :132-135 °C(lit.)
Boiling point :153 °C
Density :1.017 g/mL at 25 °C
refractive index :n20/D 1.4589
Flash point :150 °F
storage temp. :2-8°C(protect from light)
pka :8.40±0.20(Predicted)
Appearance :Light yellow to yellow Solid
InChI :InChI=1S/C10H12O6S/c1-3-15-9(13)7-5(11)6(12)8(17-7)10(14)16-4-2/h11-12H,3-4H2,1-2H3
InChIKey :YOKOBAHUBJPMGP-UHFFFAOYSA-N
SMILES :C1(C(OCC)=O)SC(C(OCC)=O)=C(O)C=1O

Safety Information

Symbol(GHS): Corrosion (GHS05)Skull and Crossbones (GHS06)Health Hazard (GHS08)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501
H360 May damage fertility or the unborn child Reproductive toxicity Category 1A, 1B Danger
H402 Harmful to aquatic life Hazardous to the aquatic environment, acute hazard Category 3
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

3,4-Dihydroxythiophene-2,5-dicarboxylic Acid Diethyl Ester is an intermediate used to prepare alkylenedioxythiophene monomers to obtain electrochromic conducting polymers.

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Suppliers and manufacturers

Shanghai Zhixin Chemical Technology Co., Ltd. J & K SCIENTIFIC LTD. Beijing HwrkChemical Technology Co., Ltd Hangzhou Sage Chemical Co., Ltd. Nanjing Norris-Pharm Technology Co., Ltd Cantotech Chemicals, Ltd. Bide Pharmatech Ltd. Shanghai YuLue Chemical Co., Ltd. Shanghai Xingui Biotechnology Co., Ltd. Nanjing YiFan Biological Technology Co., Ltd.