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Research Use Only · COA issued per batch · Use code: HOTSUMMER for free shipping until August 31st

20 Aminos
Product photograph for S20-3R vial · 5 mg
In stock

S20-3R

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SKU
11303192
CAS
2381089-83-2
Mass per vial
Quantity
Unit price$39.00

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COA issued per released batch
HPLC + mass-spec verified
Up to six-stage QC protocol
Research Use Only
Volume pricing
Bulk quantity discount pricing, price per vial
QuantityDiscountPer vial
4–5 vials10% off$35.10
6–9 vials16% off$32.76
10+ vials25% off$29.25
Frequently asked

About the compound & documentation

Factual notes on the compound and the product as supplied: chemical identity, storage, and certification. Questions about specific research applications are out of scope.

01What is S20-3R (Retatrutide)?
S20-3R is Retatrutide, a research-grade compound supplied for laboratory research use only. It is not for human or veterinary use, and is not for any diagnostic or therapeutic purpose. Lot-specific purity and analytical results are reported on the certificate of analysis for the batch received.
02How is the product stored before shipping?
Vials are held at −20 °C in a desiccated, dark environment and dispatched the same business day the order is placed.
03What does the COA include?
Reverse-phase HPLC purity (220 nm), ESI(+) mass spectrum with delta calculation, LAL endotoxin per USP <85>, water content by Karl Fischer titration, residual TFA, residual solvents per ICH Q3C, heavy metals by ICP-MS, and a signed release statement.
04What is the difference between the lot number and the COA number?
The lot ID (B-…) identifies the synthesis batch. The COA ID (COA-…) identifies the specific certificate issued for that lot. Both are printed on the vial label and the shipment paperwork.
05Where can I find prior lot COAs?
All historical COAs for every lot are kept in the COA Archive (linked in the header). Lots are listed by SKU and date; the archive contains the full PDF for every release.
Document

Certificate of Analysis · COA-B10129

A certificate of analysis is issued per released batch. The headline metrics shown above are summarised from this document; the full PDF contains the complete reverse-phase HPLC trace, ESI(+) mass spectrum, residual-solvent figures, water content, heavy-metal panel, and signatory.

Download COA · PDF

Batch documentation

A certificate of analysis is issued per released batch. The laboratory of record, analyst, and sign-off date are printed on the issued COA.

VIEW PRIOR LOT COAs IN ARCHIVE
COA batch details for S20-3R
COA IDCOA-B10129
LotB10129
Manufactured—
Expiry—
Reference data

Specifications

Identity
Identity specifications for S20-3R
SKU11303192
Handles20-3r
Product Details
Product details for S20-3R
Chemical formulaC₂₆₇H₄₀₂N₆₄O₇₈
CAS number2381089-83-2
Molecular mass4858.5
Physical formLyophilized Powder
Storage–20°C (lyophilized), –80°C after reconstitution
Shelf lifeUp to 24 months (lyophilized)
Analytical · lot B10129
Analytical data pending catalog enrichment

Products are intended for in vitro research use only. Not for human or veterinary use. Not for diagnostic or therapeutic purposes.

20 Aminos

Age & Eligibility Confirmation

20 Aminos sells research-grade compounds for in vitro research use only. These products are not for human or veterinary use, nor for diagnostic or therapeutic purposes.

Research Use Only. Not for human or veterinary use.
Not for diagnostic or therapeutic purposes.