Leucokinin II H-Asp-Pro-Gly-Phe-Ser-Ser-Trp-Gly-NH2 CAS 104821-31-0

Purity 97%+In StockPharmaceutical Standards
CAS No.104821-31-0
Molecular FormulaC39H50N10O12
Molecular Weight850.87 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Leucokinin II H-Asp-Pro-Gly-Phe-Ser-Ser-Trp-Gly-NH2 CAS 104821-31-0 chemical structure

Description

Leucokinin II H-Asp-Pro-Gly-Phe-Ser-Ser-Trp-Gly-NH2 (CAS 104821-31-0), molecular formula C39H50N10O12 and molecular weight 850.87 g/mol, is a CATO reference standard with documented purity and traceability.

Leucokinin II H-Asp-Pro-Gly-Phe-Ser-Ser-Trp-Gly-NH2 (C39H50N10O12) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC39H50N10O12
Molecular Weight850.87 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)20.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms10

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