By BioLabs Research · Last reviewed: October 8, 2026
G3-R is a catalog code at BioLabs Research. It identifies one proprietary research peptide, supplied as G3-R lyophilized research material for laboratory and in-vitro work only. Its safety data sheet (SDS) lists the material as "Proprietary research peptide (code G3-R)" [1]. This page explains what the code means, which vial sizes exist, how to check a lot against its own documents, and where the safety data is. It does not describe what the material does.
What the G3-R code means in our catalog
The code is an inventory key. The same code appears on the product page, the carton label, the invoice, the lot certificate of analysis (COA) and the SDS, so a receiving lab can match all of them to one record. It is not a grade, a strength or a description of activity.
The SDS does not list a registry number for G3-R and refers to the lot COA for identity data [1]. Identity values for the material you hold therefore come from the COA of that lot, not from this page. For how coded listings are kept apart in a receiving lab, see G1-S, G2-T and G3-R: three catalog codes, three lot files.
G3-R peptide at a glance
| Field | G3-R |
|---|---|
| Catalog code | G3-R |
| SDS description | Proprietary research peptide (code G3-R) |
| Appearance (SDS) | White to off-white lyophilized powder in a glass vial |
| Vial sizes | 10 mg, 20 mg and 50 mg |
| Identity data | On the COA for each lot |
| Storage (SDS) | −20 °C or below, desiccated, original sealed vial, protected from light and moisture |
| Intended use | Laboratory research only (RUO) |
The vial sizes differ only in the amount of material per vial. Each lot carries its own lot number and its own COA.
How to verify a G3-R lot
A lot's COA should let you check four things:
- HPLC chromatogram. Purity as area percent of the total peak area at a stated wavelength. Area percent is not net peptide content; see HPLC area percent vs net peptide content.
- Mass spectrometry (MS). The observed mass should match the expected mass stated on that lot's COA. Unexplained peaks can point to common synthesis by-products, such as deletion or insertion sequences, oxidation products or leftover counter-ions [2].
- Lot number and test date. These tie the document to the exact vial you hold.
- Testing laboratory and method. The certificate should name the laboratory that ran the analysis and identify the HPLC and MS methods used.
If any of these is missing, record the lot as "identity unresolved" and ask for a revised certificate before the vial goes into active stock. Lot COAs are available on request and are being added to our COA library. For a field-by-field walkthrough, see how to read a peptide COA.
Storage and safety data
G3-R ships as a sealed, lyophilized solid. Its SDS lists storage at −20 °C or below, desiccated, in the original sealed vial, protected from light and moisture. It also states that the material is for use only in a licensed laboratory by trained personnel, with protective equipment and without breathing the dust [1]. Download it from the SDS library.
Research use and policy
G3-R is sold for laboratory research only. It is not approved by the FDA for use in people, it is not for human or veterinary use, and it is not a drug, food, cosmetic or supplement. This page gives no preparation or administration instructions of any kind. Study design, methods and interpretation are the responsibility of the purchasing laboratory. Orders that conflict with research-only use may be cancelled under our Zero-Tolerance policy.
Frequently asked questions
Is G3-R approved for human use?
No. Under our policy, G3-R is sold for laboratory research only. It is not approved by the FDA for use in people and is not for human or veterinary use.
What does the code G3-R mean?
It is a catalog code: an inventory key that ties the product page, carton label, invoice, lot COA and SDS to one record. It does not describe what the material does.
Where do I find identity data for a G3-R lot?
On the COA for that lot. The SDS lists the material as a proprietary research peptide and refers to the lot COA for identity data.
Where do I find the purity of a G3-R lot?
On the COA for that lot, as an HPLC area-percent figure at a stated wavelength. We do not publish a purity number without a lot behind it.
What is the difference between the G3-R vial sizes?
Only the amount of material in the vial: 10 mg, 20 mg or 50 mg. Each lot has its own COA.
How should G3-R be stored?
As the SDS states: at -20 °C or below, desiccated, in the original sealed vial, protected from light and moisture.
References
- BioLabs Research. Safety Data Sheet: G3-R. Version 1.1, 8 October 2026. Available from the SDS library.
- D'Hondt M, Bracke N, Taevernier L, et al. Related impurities in peptide medicines. J Pharm Biomed Anal. 2014;101:2–30. doi:10.1016/j.jpba.2014.06.012. PubMed 25044089