Pyrethrin II

About Pyrethrin II

Pyrethrin II is an impurity of Tretinoin carrying the CAS registry number 121-29-9. Its molecular formula is C22H28O5 and its molecular weight is 372.5 g/mol. Common synonyms include Pyrethrin 2 and Pyretrin II.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

This Tretinoin 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 Pyrethrin II 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 Tretinoin

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

Tretinoin impurities

Specifications & identifiers

Chemical identifiers
Product name	Pyrethrin II
Catalogue No.	VQ-040950
CAS Number	121-29-9
IUPAC name	cis-[(1S)-2-methyl-4-oxo-3-[(2Z)-penta-2,4-dienyl]cyclopent-2-en-1-yl] (1R,3R)-3-[(E)-3-methoxy-2-methyl-3-oxoprop-1-enyl]-2,2-dimethylcyclopropane-1-carboxylate
Molecular formula	C₂₂H₂₈O₅
Molecular weight	372.5 g/mol
Exact mass	372.1937
Grade	Reference Standard
HSN code	38229090
InChIKey	VJFUPGQZSXIULQ-XIGJTORUSA-N
SMILES	CC1=C(C(=O)C[C@@H]1OC(=O)[C@@H]2[C@H](C2(C)C)/C=C(\C)/C(=O)OC)C/C=C\C=C
PubChem CID	5281555

Physical properties
Physical form	Solid
LogP (XLogP3)	4.4
H-bond donors / acceptors	0 / 5
TPSA	69.7 Å²
Synonyms	Pyrethrin 2, Pyretrin II, ENT 7,543, (+)-Pyrethronyl (+)-pyrethrate, Chrysanthemumdicarboxylic acid monomethyl ester pyrethrolone ester, Pyrethrolone ester of chrsanthemumdicarboxylic acid monomethyl ester, Pyrethrin, Pyrethrine II, Pyrethrin II [BSI:ISO], Pyrethrolone, chrysanthemum dicarboxlic acid methyl ester ester, Pyrethrine II [ISO-French]

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 Pyrethrin II?

The CAS Registry Number of Pyrethrin II is 121-29-9. It is also known as Pyrethrin 2, Pyretrin II, ENT 7,543.

What is the molecular formula and molecular weight of Pyrethrin II?

Pyrethrin II has the molecular formula C22H28O5 and a molecular weight of 372.5 g/mol.

What is Pyrethrin II used for?

Pyrethrin II is supplied as a characterised reference material related to Tretinoin. 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 Pyrethrin II can I order?

We supply Pyrethrin II 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 Pyrethrin II?

Yes. Every lot of Pyrethrin II 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 Pyrethrin II be shipped internationally?

Yes. Pyrethrin II 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.