4-Chloro-2-fluorophenylhydrazine hydrochloride

Name: 4-Chloro-2-fluorophenylhydrazine hydrochloride
Brand: ChemScene
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CAS No. 64172-78-7
Cat. No. CS-0030583
Purity≥98%
MDL No.MFCD06245512

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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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4-Chloro-2-fluorophenylhydrazine hydrochloride|CS-0030583

Structure of 64172-78-7

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General Information

CAS No. 64172-78-7
Cat. No. CS-0030583
Purity ≥98%
MDL No. MFCD06245512
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₆H₇Cl₂FN₂
Molecular Weight 197.04
Synonym(s) 4-Chloro-2-fluorophenylhydrazine HCl
SMILES [H]Cl.NNC1=CC=C(Cl)C=C1F

Description

4-Chloro-2-fluorophenylhydrazine hydrochloride features a dual halogenated aromatic core with strategically positioned chlorine and fluorine substituents, enabling enhanced electronic tuning and metabolic stability. This bench-stable derivative integrates readily into hydrazone-based conjugation workflows, offering precise control over reactivity in synthetic and medicinal chemistry applications.

Application

4-Chloro-2-fluorophenylhydrazine hydrochloride serves as a key building block for heterocyclic synthesis, enabling efficient access to pyrazole and triazole scaffolds via cycloaddition and condensation reactions. Its ortho-halogenated aryl framework enhances reactivity in palladium-catalyzed couplings, while the hydrazine functionality offers robust compatibility with standard protecting group strategies. Bench-stable and readily purified by recrystallization, it facilitates scalable synthesis of functionalized aromatic intermediates.

Safety Information

Download SDS

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 38.05
LogP 2.1865
H_Acceptors 2
H_Donors 2
Rotatable_Bonds 1

Other Classifications

Building Blocks Functional Group Hydrazine

Building Blocks Functional Group Chloride

Building Blocks Skeleton Aromatic ring compounds Benzene compounds

Key Words

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4-Chloro-2-fluorophenylhydrazine hydrochloride

CAS No. 64172-78-7

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