4-Bromo-5-chloro-1H-indazole

Name: 4-Bromo-5-chloro-1H-indazole
Brand: ChemScene
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CAS No. 1056264-74-4
Cat. No. CS-0040205
Purity≥97%
MDL No.MFCD12828060

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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+
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General Information

CAS No. 1056264-74-4
Cat. No. CS-0040205
Purity ≥97%
MDL No. MFCD12828060
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₄BrClN₂
Molecular Weight 231.48
Synonym(s) indazole,4-bromo-5-chloro
SMILES ClC1=C(Br)C2=C(NN=C2)C=C1

Description

4-Bromo-5-chloro-1H-indazole is a halogenated indazole scaffold featuring complementary electrophilic sites at the 4-bromo and 5-chloro positions. This configuration enables selective cross-coupling reactions under palladium catalysis, facilitating rapid access to complex heterocyclic architectures in medicinal chemistry and materials science applications.

Application

4-Bromo-5-chloro-1H-indazole serves as a versatile building block for the synthesis of functionalized heterocycles, enabling palladium-catalyzed cross-coupling reactions at the bromine site. The chlorine substituent offers orthogonal reactivity, allowing sequential transformations under selective conditions. Its stability and compatibility with common reaction protocols make it well-suited for medicinal chemistry campaigns and API intermediate development.

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

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Computational Chemistry Data

TPSA 28.68
LogP 2.9788
H_Acceptors 1
H_Donors 1
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Indazole compounds

Key Words

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4-Bromo-5-chloro-1H-indazole

CAS No. 1056264-74-4

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