157380-72-8 Tak 044 Cyclo(L-alpha-aspartyl-(2R)-2-(2-thienyl)glycyl-L-leucyl-D tryptophyl-D-alpha-aspartyl-(alpha-S)-alpha-amino-gamma-oxo-4-phenyl-1-piperazinebutanoyl), disodium salt Cyclo(4-oxo-4-(4-phenyl-1-piperazinyl)-L-2-aminobutanoyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl-D-alpha-aspartyl), disodium salt Cyclo(D-alpha-aspartyl-3-((4-phenylpiperazin-1-yl)carbonyl)-L-alanyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl) disodium salt Tak-044 CAS 157380-72-8

Description

CATO supplies 157380-72-8 Tak 044 Cyclo(L-alpha-aspartyl-(2R)-2-(2-thienyl)glycyl-L-leucyl-D tryptophyl-D-alpha-aspartyl-(alpha-S)-alpha-amino-gamma-oxo-4-phenyl-1-piperazinebutanoyl), disodium salt Cyclo(4-oxo-4-(4-phenyl-1-piperazinyl)-L-2-aminobutanoyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl-D-alpha-aspartyl), disodium salt Cyclo(D-alpha-aspartyl-3-((4-phenylpiperazin-1-yl)carbonyl)-L-alanyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl) disodium salt Tak-044 (CAS 157380-72-8), a certified reference material (molecular formula C45H51N9O11SNa, MW 949.00 g/mol) for analytical method development and quality control.

The molecular framework of 157380-72-8 Tak 044 Cyclo(L-alpha-aspartyl-(2R)-2-(2-thienyl)glycyl-L-leucyl-D tryptophyl-D-alpha-aspartyl-(alpha-S)-alpha-amino-gamma-oxo-4-phenyl-1-piperazinebutanoyl), disodium salt Cyclo(4-oxo-4-(4-phenyl-1-piperazinyl)-L-2-aminobutanoyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl-D-alpha-aspartyl), disodium salt Cyclo(D-alpha-aspartyl-3-((4-phenylpiperazin-1-yl)carbonyl)-L-alanyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl) disodium salt Tak-044 (C45H51N9O11SNa) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures 157380-72-8 Tak 044 Cyclo(L-alpha-aspartyl-(2R)-2-(2-thienyl)glycyl-L-leucyl-D tryptophyl-D-alpha-aspartyl-(alpha-S)-alpha-amino-gamma-oxo-4-phenyl-1-piperazinebutanoyl), disodium salt Cyclo(4-oxo-4-(4-phenyl-1-piperazinyl)-L-2-aminobutanoyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl-D-alpha-aspartyl), disodium salt Cyclo(D-alpha-aspartyl-3-((4-phenylpiperazin-1-yl)carbonyl)-L-alanyl-L-alpha-aspartyl-D-2-(2-thienyl)glycyl-L-leucyl-D-tryptophyl) disodium salt Tak-044 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

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