Peptides
Retatrutide 5mg
Retatrutide is a GGG tri-agonist acting at the GLP-1, GIP and glucagon receptors. The glucagon receptor arm is what separates it from dual agonists, adding a direct effect on hepatic substrate mobilisation and basal metabolic rate to incretin-mediated appetite and gastric emptying effects.
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- Same-day dispatch before 2 PM PT from British Columbia, Canada
- Free shipping over CA$200
- Batch-specific COA with every lot
- Priced in Canadian dollars
Specification
- Catalogue number
- OP-029
- Purity specification
- >99%
- Fill
- 5mg
- CAS number
- 2381089-83-2
- Molecular formula
- C₂₂₁H₃₄₂N₄₆O₆₈
- Molecular weight
- 4,731.4 g/mol
- Form
- Lyophilized powder
- Solubility
- Soluble in bacteriostatic water
- Shelf Life
- 24 months from date of manufacture
About Retatrutide 5mg
Retatrutide is a fatty acid acylated single peptide combining GCGR, GIPR and GLP-1R activity on a heavily modified GIP backbone, with albumin binding giving it a half-life long enough for once-weekly administration in published protocols. This 5mg vial is the smallest retatrutide presentation offered and is intended for pilot experiments, receptor-binding assays and low-concentration arms of dose-response studies, where a larger vial would leave reconstituted material sitting past its usable window.
Storage and reconstitution
Store lyophilized peptide at -20°C in a dry, dark environment. Reconstitute in bacteriostatic water. Once reconstituted, store at 2-8°C and use within 30 days. Avoid repeated freeze-thaw cycles. Lyophilized powder is stable at room temperature for shipping and short-term storage.
Shipping within Canada
Orders placed before 2:00 PM Pacific on a business day are packed and dispatched the same day. Orders placed after that cut-off, or on a weekend or statutory holiday, are dispatched on the next business day. Parcels leave British Columbia, Canada and travel entirely within the country, so nothing on this order crosses a border, clears customs or is held by CBSA. Orders over CA$200 ship free; see the shipping page for transit times by province.
Third-party testing
The certificate for this lot.
Each report below was issued by the named laboratory against one lot. Read it here, or check it against the laboratory’s own record using the verify link on the card — that second route does not depend on us at all.
Tested on the 20mg fill
Retatrutide 20mg
SideChain Analytics · COA-2026-SC-02082 · September 16, 2026
- Purity
- 99.7%
- Net peptide
- 29.26 mg net peptide
- Method
- HPLC-MS/MS
- Lot
- OPRT20100
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