5-Bromo-1H-thieno[2,3-c]pyrazole

Name: 5-Bromo-1H-thieno[2,3-c]pyrazole
Brand: ChemScene
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CAS No. 1511732-68-5
Cat. No. CS-0371054
Purity≥97%
MDL No.None

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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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5-Bromo-1H-thieno[2,3-c]pyrazole|CS-0371054

Structure of 1511732-68-5

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General Information

CAS No. 1511732-68-5
Cat. No. CS-0371054
Purity ≥97%
MDL No. None
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₃BrN₂S
Molecular Weight 203.06
Synonym(s) None
SMILES BrC(S1)=CC2=C1NN=C2

Description

5-Bromo-1H-thieno[2,3-c]pyrazole features a fused thienopyrazole core with a bromine substituent at the 5-position, delivering enhanced reactivity for cross-coupling transformations. The electron-deficient heterocycle integrates readily into pharmaceutical scaffolds and functional materials, offering high stability under standard conditions.

Application

5-Bromo-1H-thieno[2,3-c]pyrazole serves as a versatile heterocyclic building block for medicinal chemistry and materials science. The bromine substituent enables palladium-catalyzed cross-coupling reactions, facilitating the construction of biaryl and extended π-conjugated systems. Its fused thienopyrazole core exhibits excellent bench stability and functional group tolerance, supporting efficient derivatization in standard synthetic workflows.

Safety Information

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GHS Pictogram : N/A	GHS No : N/A
Signal Word : N/A	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : N/A
Precautionary Statements : N/A

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Computational Chemistry Data

TPSA 28.68
LogP 2.3869
H_Acceptors 2
H_Donors 1
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Building Blocks Skeleton Aromatic heterocycle compounds Thiophene compounds

Key Words

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5-Bromo-1H-thieno[2,3-c]pyrazole

CAS No. 1511732-68-5

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