4-Chlorobenzenesulfinic acid

Name: 4-Chlorobenzenesulfinic acid
Brand: ChemScene
Availability: InStock
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CAS No. 100-03-8
Cat. No. CS-0613156
Purity≥95%
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+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

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*For research and further manufacturing use only, not for direct human use.

Structure of 100-03-8

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Description

4-Chlorobenzenesulfinic acid offers a reactive sulfinyl group positioned para to a chlorine substituent, enabling selective transformations in synthetic routes. The electron-withdrawing chlorine enhances electrophilicity at the sulfur center, facilitating coupling reactions under mild conditions. This bench-stable reagent integrates efficiently into complex molecule assembly, particularly in pharmaceutical intermediates and functional materials.

Application

4-Chlorobenzenesulfinic acid serves as a versatile sulfination reagent in synthetic organic chemistry, enabling direct introduction of sulfinyl functionality under mild conditions. Its bench-stable crystalline form facilitates handling and purification, while the chlorine substituent provides orthogonal reactivity for downstream functionalization. The compound functions effectively in electrophilic sulfonylation and heterocycle synthesis, offering predictable regioselectivity and compatibility with common protecting groups in complex molecule assembly.

General Information

CAS No. 100-03-8
Cat. No. CS-0613156
Purity ≥95%
MDL No. None
Storage 4°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₆H₅ClO₂S
Molecular Weight 176.62
Synonym(s) None
SMILES O=S(C1=CC=C(Cl)C=C1)O

Computational Chemistry Data

TPSA 37.3
LogP 1.9206
H_Acceptors 1
H_Donors 1
Rotatable_Bonds 1

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-P330-P362-P405-P501

Quality Control

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Other Classifications

Building Blocks Functional Group Sulfinic Acid

Building Blocks Skeleton Aromatic ring compounds Benzene compounds

Key Words

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4-Chlorobenzenesulfinic acid

CAS No. 100-03-8

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