3,4-Dichloro-1,2,5-thiadiazole

Name: 3,4-Dichloro-1,2,5-thiadiazole
Brand: Vaqora Chemicals
SKU: VQ-034277

About 3,4-Dichloro-1,2,5-thiadiazole

Listed under CAS 5728-20-1, 3,4-Dichloro-1,2,5-thiadiazole is an impurity of Timolol available from Vaqora Chemicals. The compound has the formula C2Cl2N2S, corresponding to a molecular weight of 155.01 g/mol. Common synonyms include 1,2,5-Thiadiazole, 3,4-dichloro- and dichloro-1,2,5-thiadiazole.

The product is provided 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 “Danger”, so handle it with suitable PPE and consult the SDS.

Pharmaceutical QC and development laboratories use this impurity standard of Timolol to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 3,4-Dichloro-1,2,5-thiadiazole in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Timolol

View every impurity, metabolite and intermediate we list for Timolol.

Timolol impurities

Specifications & identifiers

Chemical identifiers
Product name	3,4-Dichloro-1,2,5-thiadiazole
Catalogue No.	VQ-034277
CAS Number	5728-20-1
IUPAC name	3,4-dichloro-1,2,5-thiadiazole
Molecular formula	C₂Cl₂N₂S
Molecular weight	155.01 g/mol
Exact mass	153.9159
Grade	Reference Standard
HSN code	38229090
InChIKey	YNZQOVYRCBAMEU-UHFFFAOYSA-N
SMILES	C1(=NSN=C1Cl)Cl
PubChem CID	79804

Physical properties
Physical form	Solid
LogP (XLogP3)	2.3
H-bond donors / acceptors	0 / 3
TPSA	54 Å²

Safety & hazard information (GHS)

Toxic

Harmful / irritant

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects

Precautionary statements: P261, P264, P264 + P265, P270, P271, P273, P280, P301 + P316, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, 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 3,4-Dichloro-1,2,5-thiadiazole?

The CAS Registry Number of 3,4-Dichloro-1,2,5-thiadiazole is 5728-20-1. It is also known as 1,2,5-Thiadiazole, 3,4-dichloro-, dichloro-1,2,5-thiadiazole, 4,5-dichloro-2,1,3-thiadiazole.

What is the molecular formula and molecular weight of 3,4-Dichloro-1,2,5-thiadiazole?

3,4-Dichloro-1,2,5-thiadiazole has the molecular formula C2Cl2N2S and a molecular weight of 155.01 g/mol. Its IUPAC name is 3,4-dichloro-1,2,5-thiadiazole.

What is 3,4-Dichloro-1,2,5-thiadiazole used for?

3,4-Dichloro-1,2,5-thiadiazole is supplied as a characterised reference material related to Timolol. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 3,4-Dichloro-1,2,5-thiadiazole can I order?

We supply 3,4-Dichloro-1,2,5-thiadiazole 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 3,4-Dichloro-1,2,5-thiadiazole?

Yes. Every lot of 3,4-Dichloro-1,2,5-thiadiazole 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 3,4-Dichloro-1,2,5-thiadiazole be shipped internationally?

Yes. 3,4-Dichloro-1,2,5-thiadiazole 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.