Chlorthion

About Chlorthion

Chlorthion is an API reference standard carrying the CAS registry number 500-28-7. Its molecular formula is C8H9ClNO5PS and its molecular weight is 297.65 g/mol. Its systematic (IUPAC) name is (3-chloro-4-nitrophenoxy)-dimethoxy-sulfanylidene-lambda5-phosphane. It is also known as Chlorthion methyl or Methyl chlorothion.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Laboratories use this the parent drug substance standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Chlorthion in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material
Agrochemical formulations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Chlorthion
Catalogue No.	VQ-045187
CAS Number	500-28-7
IUPAC name	(3-chloro-4-nitrophenoxy)-dimethoxy-sulfanylidene-lambda5-phosphane
Molecular formula	C₈H₉ClNO₅PS
Molecular weight	297.65 g/mol
Exact mass	296.9628
Grade	Reference Standard
HSN code	38229090
InChIKey	NZNRRXXETLSZRO-UHFFFAOYSA-N
SMILES	COP(=S)(OC)OC1=CC(=C(C=C1)[N+](=O)[O-])Cl
PubChem CID	10372

Physical properties
Physical form	Solid
LogP (XLogP3)	3.5
H-bond donors / acceptors	0 / 6
TPSA	106 Å²
Synonyms	Chlorthion methyl, Methyl chlorothion, Compound 22/190, Bayer 22/190, OMS 217, p-Nitro-m-chlorophenyl dimethyl thionophosphate, O-(3-Chloro-4-nitrophenyl) O,O-dimethyl phosphorothioate, O,O-Dimethyl p-nitro-m-chlorophenyl thiophosphate, ENT 18,861, O,O-Dimethyl O-(3-chloro-4-nitrophenyl) thiophosphate, Dimethyl 3-chloro-4-nitrophenyl thionophosphate, O,O-Dimethyl O-(3-chloro-4-nitrophenyl) phosphorothioate

Safety & hazard information (GHS)

Harmful / irritant

Environmental hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P261, P264, P270, P271, P273, P280, P301 + P317, P302 + P352, P304 + P340, P317, P321, P330, P362 + P364, P391, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Chlorthion?

The CAS Registry Number of Chlorthion is 500-28-7. It is also known as Chlorthion methyl, Methyl chlorothion, Compound 22/190.

What is the molecular formula and molecular weight of Chlorthion?

Chlorthion has the molecular formula C8H9ClNO5PS and a molecular weight of 297.65 g/mol. Its IUPAC name is (3-chloro-4-nitrophenoxy)-dimethoxy-sulfanylidene-lambda5-phosphane.

Which grade and pack sizes of Chlorthion can I order?

We supply Chlorthion in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Chlorthion?

Yes. Every lot of Chlorthion is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Chlorthion be shipped internationally?

Yes. Chlorthion is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.