Alpha-Cypermethrin

About Alpha-Cypermethrin

Alpha-Cypermethrin is an impurity of Permethrin carrying the CAS registry number 67375-30-8. Its molecular formula is C22H19Cl2NO3 and its molecular weight is 416.3 g/mol. Alternative names: a-Cypermethrin (Racemic Mixture) and alpha-Cypermethrin (Racemic Mixture).

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

This Permethrin impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

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

Typical applications

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

Industries

Related to Permethrin

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

Permethrin impurities

Specifications & identifiers

Chemical identifiers
Product name	Alpha-Cypermethrin
Catalogue No.	VQ-032438
CAS Number	67375-30-8
IUPAC name	trans-[(S)-cyano-(3-phenoxyphenyl)methyl] (1R,3R)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate
Molecular formula	C₂₂H₁₉Cl₂NO₃
Molecular weight	416.3 g/mol
Exact mass	415.0742
Grade	Reference Standard
HSN code	38229090
InChIKey	KAATUXNTWXVJKI-NSHGMRRFSA-N
SMILES	CC1([C@H]([C@H]1C(=O)O[C@H](C#N)C2=CC(=CC=C2)OC3=CC=CC=C3)C=C(Cl)Cl)C
PubChem CID	93357

Physical properties
Physical form	Solid
LogP (XLogP3)	6
H-bond donors / acceptors	0 / 4
TPSA	59.3 Å²
Synonyms	a-Cypermethrin (Racemic Mixture), alpha-Cypermethrin (Racemic Mixture), Alphamethrin, Alfoxylate, Ultimate, Fastac 10 EC, Dudu alpha, Beta-cypermethrin, (+/-)-Alphamethrin, (1R)-cis-(alphaS)-cypermethrin, alpha-Cypermetrin

Safety & hazard information (GHS)

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P260, P261, P264, P270, P271, P273, P301 + P316, P304 + P340, P319, P321, P330, P391, 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 Alpha-Cypermethrin?

The CAS Registry Number of Alpha-Cypermethrin is 67375-30-8. It is also known as a-Cypermethrin (Racemic Mixture), alpha-Cypermethrin (Racemic Mixture), Alphamethrin.

What is the molecular formula and molecular weight of Alpha-Cypermethrin?

Alpha-Cypermethrin has the molecular formula C22H19Cl2NO3 and a molecular weight of 416.3 g/mol. Its IUPAC name is trans-[(S)-cyano-(3-phenoxyphenyl)methyl] (1R,3R)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate.

What is Alpha-Cypermethrin used for?

Alpha-Cypermethrin is supplied as a characterised reference material related to Permethrin. 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 Alpha-Cypermethrin can I order?

We supply Alpha-Cypermethrin 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 Alpha-Cypermethrin?

Yes. Every lot of Alpha-Cypermethrin 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 Alpha-Cypermethrin be shipped internationally?

Yes. Alpha-Cypermethrin 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.