Purity

98.8%

Vial

3 mL × 10

Lot

GPB-4594

Metabolic · CAS 2023788-19-2

Tirzepatide

GIP / GLP-1 Dual Agonist

The pre-filled pen range Ask GpharmaBio for a vial quote

UK & Europe Next-Day Delivery — Order before 1pm.Worldwide Delivery — Estimated delivery within 5–10 days.

The certificate for lot GPB-4594 is published in full further down this page.

Supplied in sealed boxes of 10 vials, one lot to a box. Single vials are not broken out of a box.

Primary sequence

TyrAibGluGlyThrPheThrSerAspTyrSerIleAlaLeuAspLys[γGlu·2×AEEA·C20 diacid]… (39)

Physical data

Molecular formula: C₂₂₅H₃₄₈N₄₈O₆₈
Molecular weight: 4813.53 g/mol
CAS number: 2023788-19-2
Appearance: White lyophilised cake
Solubility: Soluble in sterile water to 5 mg/mL; sparing below pH 5
Storage: Lyophilised: −20 °C, desiccated

Certificate of analysis

Lot GPB-4594, in full.

Published here. Nothing to request, nothing behind a form.

GpharmaBio

RESEARCH PEPTIDE LAB

part of GBAGROUP

CERTIFICATE OF ANALYSIS

GPB-4594

PRODUCT: Tirzepatide
FILL: 10 mg / 3 mL vial · box of 10
SYNTHESISED: 19 Apr 2026
RELEASED: 27 Apr 2026
RETEST: Apr 2028

IDENTITY

CAS NUMBER: 2023788-19-2
MOLECULAR FORMULA: C₂₂₅H₃₄₈N₄₈O₆₈
MOLECULAR WEIGHT: 4813.53 g/mol

RP-HPLC, C18 2.7 µm 150 × 4.6 mm · 0.1% TFA / MeCN, 5–65% over 30 min · 1.0 mL/min · DAD 214 nm

Analytical purity scaleRP-HPLC area @ 214 nm

98.8%

Measured, this lot

High purity

Release specification ≥ 98.0%

98.8%

9596979899100

Red rule marks the house release limit. This lot sits 0.8 points above it. Area percent cannot see anything without a chromophore at 214 nm, which is why moisture, counterion and net peptide content are reported separately below.

TEST	RESULT, THIS LOT
RP-HPLC purity	98.8% area @ 214 nm
Identity (ESI-MS)	4813.9 observed, deconvoluted
Identity (co-injection)	Single peak vs. reference
Net peptide content	78.2%
Water (Karl Fischer)	4.1%
Bacterial endotoxin	< 0.25 EU/mg (LAL)

Security code

X2G4-248P

Verified by AUTHENTIX®

This is the sheet for the lot on the shelf — not a representative document. If the lot number moves on before you order, the page moves with it.

Handling

Bring the vial to room temperature before opening to avoid condensation.
Stable ~21 days at 2–8 °C in solution.
Avoid acidic buffers below pH 5 — solubility drops sharply.

For laboratory research use only. Not for human or veterinary consumption, diagnostic or therapeutic use.

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