GLP-2 (TZ) is our name for tirzepatide, a synthetic 39-amino-acid peptide that acts as a dual agonist at the GIP and GLP-1 receptors. A C20 fatty-diacid moiety supports albumin binding and a long half-life in laboratory models. This is the 20 mg vial, a larger size of our GLP-2 (TZ) 10 mg. It is used in receptor-pharmacology research on incretin signaling. Pre-order: ships by Friday, November 13; the lot is third-party tested on arrival and the report is posted on this page. For laboratory research use only. Review product identity, documentation status, research standards, and traceability information before ordering.
CAS number
2023788-19-2
Molecular formula
C225H348N48O68
Molecular weight
4813.5 g/mol
Form
Lyophilized powder, sealed vial
Price
$109.99 USD
Fulfillment
Ships from the U.S.; tracking is emailed after shipment
GLP-2 (TZ) 20MG is supplied as a lyophilized powder in a sealed vial, CAS 2023788-19-2, molecular formula C225H348N48O68, molecular weight 4813.5 g/mol. Orders ship from Anchorage, Alaska. Tracking information is provided when available; a label alone does not establish carrier acceptance.
Common questions about batch documentation
Is a certificate of analysis the same as “third-party tested”?
No. “Third-party tested” is a claim; a certificate of analysis is a document. The difference that matters is whether the certificate names a specific lot, carries a date and a certificate number, and can be checked with the issuing laboratory. A report that does not name the lot cannot be matched to the vial in your hand.
Can I read the report before I order?
Available reports can be read in the open batch COA library before purchase. Verify coverage for the specific product and lot; a report for another lot does not establish testing of your shipment.
What if the lot number on my vial does not match any published report?
Then the documentation does not cover what you received, and you should ask the supplier why before anything else. Email us and we will resolve it.
Does a high purity number mean the material is what the label says?
Not on its own. Purity by HPLC describes the proportion of detected peak area; identity is a separate determination, either a retention-time match against a reference standard (HPLC-RTM, the method on the reports published here) or mass spectrometry. Read the identity line next to the purity result, which is why the full certificate matters more than a single headline percentage.
Ordering questions
Where does GLP-2 (TZ) 20MG ship from, and how fast?
From Anchorage, Alaska, by USPS with tracking. Orders paid by midnight ET ship the same day, 7 days a week (except USPS holidays). U.S. shipping is $9.99 by Priority Mail, free on orders of $149 or more after discounts; see the shipping policy.
How can I pay?
Card or bank payment through a secure invoice (Apple Pay and Google Pay are offered at the card step), or Zelle, which saves 5%. An account is optional; guest checkout is available.
What if an order arrives damaged, wrong or lost?
We send a free reship or give a full refund. Email support@arcticlabsupply.com with the order number within 48 hours of delivery. Unopened, sealed items are covered by our 30-day money-back guarantee (30 days from delivery); see the return policy.
Research use only
For laboratory, analytical, educational, and in-vitro research only. Not for administration to or ingestion by any person or animal, and not for veterinary, therapeutic, or diagnostic use. Products ship as freeze-dried powder unless stated otherwise. See the research standards, traceability, shipping, and returns pages.