[γ-Glu28]-Retatrutide Impurity

Descriptionγ-Glu28-Retatrutide Impurity is a high-purity peptide impurity of Retatrutide, supplied as a research-grade analytical material for impurity identification, analytical method development and quality-control research. In this variant, a glutamic acid residue in the peptide backbone (γ-Glu28) is linked through its γ-carboxyl group instead of the α-carboxyl group, forming an isopeptide bond; this backbone isomer can arise during synthesis or degradation. It can serve as a qualitative marker for retention-time and mass confirmation when profiling Retatrutide samples by HPLC and LC-MS.Specifications Parameter Value Product Category Retatrutide Impurity Grade Research grade (for analytical use only) Appearance Off-white lyophilized powder Catalog Number BF-RTR-gamma-Glu28 Package Size 50 mg (custom sizes available upon request) Purity ≥95% (HPLC) Salt Form Sodium salt CAS Number N/A Parent Compound CAS 2381089-83-2 (Retatrutide) Molecular Formula C221H342N46O68 Molecular Weight 4731.42 Solubility 20% ACN in water Storage Condition -20±5°C, protect from light and moisture Synonyms [γ-Glu28]Retatrutide; Backbone γ-linkage isomer impurity Applications Impurity identification and peak tracking in HPLC and LC-MS analysis Analytical method development and optimization Process-related impurity research for Retatrutide peptide synthesis Forced degradation and stability research Retention-time and mass confirmation as a qualitative marker Custom sizes and specifications are available upon request. Please use the Request a Quote button for pricing.DocumentsMSDSCOA