5-Chlorothiophene-2-carboxylic acid hydrazide

CAS 351983-31-8C5H5ClN2OSChemical Synthesis

5-Chlorothiophene-2-carboxylic acid hydrazide (CAS: 351983-31-8) is a halogenated heterocyclic compound with the molecular formula C5H5ClN2OS and a molecular weight of 176.62 g/mol. This thiophene derivative serves as a valuable building block in organic synthesis. Its chemical structure makes it suitable for developing novel compounds, particularly within the pharmaceutical and agrochemical research sectors.

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5-Chlorothiophene-2-carboxylic acid hydrazide (C5H5ClN2OS) — chemical structure, CAS 351983-31-8; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC4 to C6Chemical SynthesisHalogenated HeterocyclesHeterocyclic Building BlocksThiophenes More...

01 /Applications

Organic Synthesis Intermediate

This compound functions as a key intermediate in the synthesis of more complex organic molecules. Its reactive functional groups allow for diverse chemical transformations.

Pharmaceutical Research

Used in the development of novel drug candidates, where the thiophene core and chloro-substituent can be incorporated into biologically active structures.

Agrochemical Development

Applicable in the synthesis of new pesticides or herbicides, leveraging its heterocyclic structure for potential biological activity.

Heterocyclic Chemistry

A useful reagent for creating substituted thiophene derivatives, contributing to the exploration of heterocyclic chemistry.

02 /Properties

Molecular weight	176.62
Empirical formula	C5H5ClN2OS
Assay	97%
Melting point	146-150 °C

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	22-36/37/38
Safety statements (S)	26

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

351983-31-8

MDL number

MFCD01310805

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 5-Chlorothiophene-2-carboxylic acid hydrazide used for?

5-Chlorothiophene-2-carboxylic acid hydrazide is primarily used as a building block and intermediate in organic synthesis, particularly in the research and development of pharmaceuticals and agrochemicals.

What is the CAS number and chemical formula?

The CAS number is 351983-31-8 and the chemical formula is C5H5ClN2OS.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 5-Chlorothiophene-2-carboxylic acid hydrazide with an assay of 97%. TSS does not represent this product as USP, BP, EP, or any other pharmacopoeia grade.

How should 5-Chlorothiophene-2-carboxylic acid hydrazide be handled safely?

Handle with appropriate personal protective equipment including Eyeshields, Gloves, and a dust mask type N95 (US). Avoid breathing dust and ensure good ventilation. It is classified as harmful if swallowed and causes skin and eye irritation, and may cause respiratory irritation.