L-Isoleucyl-L-isoleucyl-L-alanyl-L-arginine CAS 819802-73-8

Purity 97%+In StockPharmaceutical Standards
CAS No.819802-73-8
Molecular FormulaC21H41N7O5
Molecular Weight471.59 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

L-Isoleucyl-L-isoleucyl-L-alanyl-L-arginine CAS 819802-73-8 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including L-Isoleucyl-L-isoleucyl-L-alanyl-L-arginine.

CATO supplies L-Isoleucyl-L-isoleucyl-L-alanyl-L-arginine (CAS 819802-73-8), a certified reference material (molecular formula C21H41N7O5, MW 471.59 g/mol) for analytical method development and quality control.

Structurally, L-Isoleucyl-L-isoleucyl-L-alanyl-L-arginine (C21H41N7O5) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 471.59 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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

CATO manufactures L-Isoleucyl-L-isoleucyl-L-alanyl-L-arginine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC21H41N7O5
Molecular Weight471.59 g/mol
AppearanceOff-white to pale yellow crystalline powder
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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms7

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