Selamectin EP Impurity B

Name: Selamectin EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-027996

About Selamectin EP Impurity B

Listed under CAS 165108-09-8, Selamectin EP Impurity B is a pharmacopeial impurity of Selamectin available from Vaqora Chemicals. Formula C43H61NO11, molecular weight 767.9 g/mol. Alternative names: Selamectin - Impurity B and 22,23-Didehydro Selamectin.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of Selamectin to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Selamectin EP Impurity B in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Selamectin

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

Selamectin impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Selamectin EP Impurity B
Catalogue No.	VQ-027996
CAS Number	165108-09-8
IUPAC name	(1'R,2R,3S,4'S,6S,8'R,10'E,12'S,13'S,14'E,16'E,20'R,24'S)-2-cyclohexyl-24'-hydroxy-21'-hydroxyimino-12'-[(2R,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-3,11',13',22'-tetramethylspiro[2,3-dihydropyran-6,6'-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene]-2'-one
Molecular formula	C₄₃H₆₁NO₁₁
Molecular weight	767.9 g/mol
Exact mass	767.4245
Grade	Reference Standard
HSN code	38229090
InChIKey	GATKGOZXXRVNJY-PBTBINGESA-N
SMILES	C[C@H]1/C=C/C=C/2\CO[C@H]3[C@@]2([C@@H](C=C(C3=NO)C)C(=O)O[C@H]4C[C@@H](C/C=C(/[C@H]1O[C@H]5C[C@@H]([C@H]([C@@H](O5)C)O)OC)\C)O[C@]6(C4)C=C[C@@H]([C@H](O6)C7CCCCC7)C)O
PubChem CID	131874747

Physical properties
Physical form	Solid
LogP (XLogP3)	5.2
H-bond donors / acceptors	3 / 12
TPSA	155 Å²

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 Selamectin EP Impurity B?

The CAS Registry Number of Selamectin EP Impurity B is 165108-09-8. It is also known as Selamectin - Impurity B, 22,23-Didehydro Selamectin, Selamectin Impurity 2.

What is the molecular formula and molecular weight of Selamectin EP Impurity B?

Selamectin EP Impurity B has the molecular formula C43H61NO11 and a molecular weight of 767.9 g/mol.

What is Selamectin EP Impurity B used for?

Selamectin EP Impurity B is supplied as a characterised reference material related to Selamectin. 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 Selamectin EP Impurity B can I order?

We supply Selamectin EP Impurity B 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 Selamectin EP Impurity B?

Yes. Every lot of Selamectin EP Impurity B 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 Selamectin EP Impurity B be shipped internationally?

Yes. We export Selamectin EP Impurity B worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.