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PHI90002

D-Allo-Thr(5)-Liraglutide

GLP-1 Agonist Impurity, analytical standard, Numbering in the name as per API

Synonym(s):

D-allo-Thr(11)-Liraglutide, H-His-Ala-Glu-Gly-D-allo-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Glu-Ala-Ala-Lys(γ-Glu-palmitoyl)-Glu-Phe-Ile-Ala-Kyn-Leu-Val-Arg-Gly-Arg-Gly-OH

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About This Item

Empirical Formula (Hill Notation):
C172H265N43O51
Molecular Weight:
3751.20
UNSPSC Code:
41116107
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grade

analytical standard

Quality Segment

API family

liraglutide, liraglutide, liraglutide, liraglutide

form

solid

technique(s)

HPLC: suitable, LC/MS: suitable, liquid chromatography (LC): suitable, mass spectrometry (MS): suitable

format

neat

SMILES string

OC[C@@H](C(N[C@@H](CC1=CC=C(O)C=C1)C(N[C@@H](CC(C)C)C(N[C@@H](CCC(O)=O)C(NCC(N[C@@H](CCC(N)=O)C(N[C@@H](C)C(N[C@@H](C)C(N[C@@H](CCCCNC(CC[C@@H](C(O)=O)NC(CCCCCCCCCCCCCCC)=O)=O)C(N[C@H](C(N[C@H](C(N[C@@H]([C@@H](C)CC)C(N[C@H](C(N[C@@H](CC2=CNC3=CC=CC=C23)C(N[C@@H](CC(C)C)C(N[C@@H](C(C)C)C(N[C@H](C(NCC(N[C@H](C(NCC(O)=O)=O)CCCNC(N)=N)=O)=O)CCCNC(N)=N)=O)=O)=O)=O)C)=O)=O)CC4=CC=CC=C4)=O)CCC(O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)NC([C@H](CO)NC([C@H](C(C)C)NC([C@H](CC(O)=O)NC([C@H](CO)NC([C@H]([C@H](O)C)NC([C@H](CC5=CC=CC=C5)NC([C@H]([C@@H](O)C)NC(CNC([C@H](CCC(O)=O)NC([C@H](C)NC([C@H](CC6=CNC=N6)N)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O

General description

This analytical standard of D-Allo-Thr(5)-Liraglutide, API numbering D-Allo-Thr(11)-Liraglutide is a diastereomeric impurity of Liraglutide resulting from the incorporation of D-allo-Threonine—the diastereomer of L-Threonine with inverted configuration at both the α- and β-carbons—at position 5 (API numbering). This substitution can originate from racemisation or epimerisation of the Thr building block during SPPS. The compound otherwise retains the complete Liraglutide structure, including the palmitoyl–γGlu–Lys26 fatty acid modification. The D-allo configuration at Thr5 is expected to perturb local backbone geometry and helix formation, with potential consequences for receptor engagement.

Application

Used as an analytical standard for the identification and semi-quantification of the D-allo-Thr-5 diastereomeric impurity in Liraglutide API by reversed-phase HPLC, chiral chromatography, and LC-MS/MS methods.

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Warning

Hazard Codes

H302,H361d

Hazard Classifications

Acute Tox. 4 Oral - Repr. 2

Storage Class

11 - Combustible Solids

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

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