Description

pGlu28-Retatrutide(28-39) Fragment 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. This truncated fragment (Pyr28-39) carries an N-terminal pyroglutamate formed by cyclization of an N-terminal glutamine/glutamic acid residue after backbone cleavage, representing a degradation-related fragment impurity. 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-Fragment-Pyr28-39
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	C43H65N13O16
Molecular Weight	1020.07
Solubility	20% ACN in water
Storage Condition	-20±5°C, protect from light and moisture
Synonyms	[Fragment-Pyr28-39]Retatrutide; Fragment (pyroglutamate) 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.

Documents

MSDS

COA

[pGlu28]-Retatrutide(28-39) Fragment Impurity