Benzo[b]benzo[4,5]thieno[2,3-d]thiophene

Name: Benzo[b]benzo[4,5]thieno[2,3-d]thiophene
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CAS No. 248-70-4
Cat. No. CS-0110612
Purity≥98%
MDL No.MFCD02114004

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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Benzo[b]benzo[4,5]thieno[2,3-d]thiophene|CS-0110612

Structure of 248-70-4

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Description

Benzo[b]benzo[4,5]thieno[2,3-d]thiophene delivers a rigid, planar polycyclic scaffold with enhanced electron delocalization. This fused thiophene system exhibits high thermal stability and favorable charge transport properties, making it well-suited for organic semiconductors and advanced materials in optoelectronic applications.

Application

Benzo[b]benzo[4,5]thieno[2,3-d]thiophene serves as a rigid, polycyclic sulfur-containing heteroaromatic scaffold with enhanced planarity and electron-rich character. It functions as a key building block in the synthesis of organic semiconductors and functional materials, enabling efficient π-conjugation and favorable charge transport properties. The molecule exhibits excellent thermal and oxidative stability, facilitating its use in high-performance device architectures. Its well-defined reactivity profile supports selective functionalization at peripheral positions, allowing tailored derivatization for advanced electronic applications.

General Information

CAS No. 248-70-4
Cat. No. CS-0110612
Purity ≥98%
MDL No. MFCD02114004
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₄H₈S₂
Molecular Weight 240.34
Synonym(s) benzthieno[3,2-b]benzothiophene
SMILES C12=CC=CC=C1C3=C(S2)C4=CC=CC=C4S3

Computational Chemistry Data

TPSA 0
LogP 5.2692
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 0

Safety Information

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GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Other Classifications

Material Science Material Composite Block Optoelectronic Material Intermediate

Material Science Material Building Blocks Small Molecule Semiconductor Building Blocks Benzothiophenes

Key Words

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Benzo[b]benzo[4,5]thieno[2,3-d]thiophene

CAS No. 248-70-4

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