Lot T5223 Save $22.50 Tirzepatide Research Peptide

Research peptide · Lyophilized

Tirzepatide Research Peptide

Tirzepatide — USA Made, ≥99% Purity

4.9 177 verified reviews

39-amino-acid, dual-receptor research peptide in a 10mg lyophilized vial
USA manufactured in GMP-certified California and Arizona laboratory facilities
≥99% purity target with third-party HPLC, mass spectrometry, and batch COA

Vial Size

Vial size

Clear

Manufactured in a GMP facility · Independently tested · Batch COA

Dispatched from a US warehouse within 48 hours, tracked

Certificate of analysis for lot T5223 below

Disclaimer

For research purposes only. Not intended for human consumption, medical use, diagnosis, treatment, or prevention of disease.

Specifications

Lot T5223

Purity target

≥99%

≥99% (3rd-Party HPLC Tested)

Molecular mass

4,813.53

g/mol, confirmed by mass spectrometry

Vial content

10 MG

Lyophilized Powder

Sequence

Tyr-Aib-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Ile-Aib-Leu-Asp-Lys-Ile-Ala-Gln-Lys(AEEA-AEEA-γGlu-C20 diacid)-Ala-Phe-Val-Gln-Trp-Leu-Ile-Ala-Gly-Gly-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2

CAS: 2023788-19-2
Molecular mass: 4,813.53 g/mol
Purity target: ≥99% (3rd-Party HPLC Tested)
Form: Lyophilized Powder
Origin: Manufactured, Formulated & Packaged in CA/AZ, USA
Storage: Store at -20°C (Freeze) or 2–8°C (Refrigerated) protected from light

What is Tirzepatide?

Tirzepatide is a synthetic 39-amino-acid peptide based partly on the GIP sequence and modified with a C20 fatty diacid. In research systems, it activates both GIP and GLP-1 receptors, allowing scientists to examine coordinated incretin-receptor signaling.

Tirzepatide is also the active ingredient in FDA-approved prescription medicines. This 321 Peptides lyophilized vial is not Mounjaro, Zepbound, or any approved finished drug and must not be used or represented as a substitute.

How It Works

Activates GIP receptors: This pathway is involved in nutrient-responsive endocrine signaling.

Activates GLP-1 receptors: Researchers examine effects on glucose-dependent signaling and energy-balance pathways.

Uses lipidation for albumin interaction: The C20 fatty-diacid structure supports albumin binding in biological research models.

Analytical data

Every lot, on the record

Independent third-party HPLC evaluates the purity target, while mass spectrometry confirms molecular identity. Both results are documented in one combined, batch-specific Certificate of Analysis.

Purity (HPLC-UV)

99.84%

Net content

12.13 mg

Reported

2026-04-23

Identity (LC-MS): Confirmed
Appearance: White Lyophilized Powder

HPLC MS

Analyte	Method	Result
Identity	LC-MS	GLP TZ
Purity	HPLC-UV	99.84%
Net Content		12.13 mg

Chromatogram

Mass confirmation

Download COA (PDF)

Why Source from 321 Peptides?

Domestic synthesis and finishing.

Tirzepatide is manufactured in GMP-certified California and Arizona laboratory facilities, never sourced from overseas or Mexico.

Analytical proof for a modified peptide.

Third-party HPLC evaluates the ≥99% purity target and mass spectrometry verifies molecular identity. One combined COA reports both results by batch.

Lyophilized research format.

Freeze-drying supports stability through storage and domestic transit. Fast fulfillment keeps the supply chain short and accountable.

Lot history 7 released lots

Every batch released under this compound, with the figure reported for each.

Lot	Reported	Purity	Net content	COA
TI-89416 Superseded	2026-05-06	99.46%	10.01 mg	Pending
TI-89993 Superseded	2026-05-02	99.58%	10.02 mg	Pending
TI-59207 Superseded	2026-04-23	99.64%	20.04 mg	Pending
T5223	2026-04-23	99.84%	12.13 mg	PDF
TI-88839 Superseded	2026-04-08	99.49%	10.00 mg	Pending
TI-59784 Superseded	2026-03-19	99.88%	20.06 mg	Pending
TI-58630 Superseded	2026-02-25	99.52%	20.02 mg	Pending

Frequently Asked Questions

What is Tirzepatide?

Tirzepatide is a modified 39-amino-acid peptide that activates both GIP and GLP-1 receptors. The molecule contains a C20 fatty-diacid side chain attached through a linker.

How does Tirzepatide work in research models?

Tirzepatide activates GIPR and GLP-1R, letting researchers study coordinated incretin-receptor signaling. The lipid side chain also supports albumin interaction in biological systems.

Is this product Mounjaro or Zepbound?

No, this research vial is not Mounjaro, Zepbound, or another FDA-approved drug product. It is not intended for human use or as a prescription substitute.