Jingsj
.mol.sdf

5-Chloro-2-thiophenecarboxylic acid hydrazide

5-氯-2-噻吩甲酰肼

Also known as: 5-Chlorothiophene-2-carboxylic acid hydrazide, 5-Chlorothiophene-2-carbohydrazide, 5-chloro-2-thiophenecarbohydrazide, 5-Chloro-2-thiophenecarboxylic hydrazine, 2-Thiophenecarboxylic acid, 5-chloro-, hydrazide, 5-Chlorothiophene-2-carboxylic acid hydrazide 97%, 5-CHLORO-2-THIOPHENCARBOXYLIC ACID HYDRAZIDE, 5-CHLORO-THIOPHENE-2-CARBOXYLIC ACID HYDRAZIDE, 5-CHLORTHIOPHENE-2-CARBOXYLIC ACID HYDRAZIDE, MFCD01310805

5-Chloro-2-thiophenecarboxylic acid hydrazide (CAS 351983-31-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5ClN2OS and a molecular weight of 176.62400 g/mol. It is also known as 5-Chlorothiophene-2-carboxylic acid hydrazide, 5-Chlorothiophene-2-carbohydrazide and 5-chloro-2-thiophenecarbohydrazide. Key properties include a melting point of 148-149ºC and a density of 1.491g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
351983-31-8
Jingsj CID
J-1110853-9
Molecular Formula
C5H5ClN2OS
Chinese Name
5-氯-2-噻吩甲酰肼
Molecular Weight
176.62400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point148-149ºC
Density1.491g/cm3

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 5-Chloro-2-thiophenecarboxylic acid hydrazide?

The CAS number of 5-Chloro-2-thiophenecarboxylic acid hydrazide is 351983-31-8.

What are the molecular formula and molecular weight of 5-Chloro-2-thiophenecarboxylic acid hydrazide?

5-Chloro-2-thiophenecarboxylic acid hydrazide has molecular formula C5H5ClN2OS and molecular weight 176.62400 g/mol.

Is 5-Chloro-2-thiophenecarboxylic acid hydrazide hazardous?

5-Chloro-2-thiophenecarboxylic acid hydrazide has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-Chloro-2-thiophenecarboxylic acid hydrazide (CAS 351983-31-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1110853-9 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.