3,4-Dimethylthieno(2,3-b)thiophene-2,5-dicarboxylic acid - ≥98% , CAS No.175202-55-8

CAS: 175202-55-8 Cat. No.: D701022 Molecular Weight: 256.30 EC Number: 673-127-8
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic acid
Storage
Store at 2-8°C,Protected from light
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
D701022-250mg
1
$67.90
1g
D701022-1g
1
$131.90
5g
D701022-5g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$459.90
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Protected from light Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
3, 4-Dimethylthieno[2, 3-b]thiophene-2, 5-dicarboxylic acid
Specifications & Purity
≥98%
Storage
Store at 2-8°C, Protected from light
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥98%
Names and Identifiers
Canonical SmilesCC1=C(SC2=C1C(=C(S2)C(=O)O)C)C(=O)O
IUPAC Name3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic acid
InChIKeyJARLNIWLMPUVAR-UHFFFAOYSA-N
INCHI1S/C10H8O4S2/c1-3-5-4(2)7(9(13)14)16-10(5)15-6(3)8(11)12/h1-2H3,(H,11,12)(H,13,14)
Isomeric SMILES CC1=C(SC2=C1C(=C(S2)C(=O)O)C)C(=O)O
Molecular Weight 256.30

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassThienothiophenes
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentThienothiophenes
Alternative Parents Thiophene carboxylic acids  Dicarboxylic acids and derivatives  Heteroaromatic compounds  Carboxylic acids  Organooxygen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Thienothiophene - Thiophene carboxylic acid or derivatives - Thiophene carboxylic acid - Dicarboxylic acid or derivatives - Heteroaromatic compound - Thiophene - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as thienothiophenes. These are organic compounds containing two thiophene rings fused to each other.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

3 results found

Lot NumberCertificate TypeDateItem
J2520530Certificate of AnalysisAug 20, 2025 D701022
J2520551Certificate of AnalysisAug 20, 2025 D701022
J2520553Certificate of AnalysisAug 20, 2025 D701022
Chemical and Physical Properties
Sensitivitylight & Moisture sensitive
Molecular Weight256.300 g/mol
XLogP33.400
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count6
Rotatable Bond Count2
Exact Mass255.986 Da
Monoisotopic Mass255.986 Da
Topological Polar Surface Area131.000 Ų
Heavy Atom Count16
Formal Charge0
Complexity303.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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