Specimen GSH-994
SPPS Grade
- Compound
- Glutathione (reduced)
- Purity (HPLC)
- ≥ 99.0 %
- Presentation
- Lyophilised
- Batch COA
- Published
UK Synthesis & Dispatch
Advancing research
Advancing research
with confidence.
Precision. Performance. Progress.
High-purity research peptides, dispatched from the UK. Every batch is tested before it ships, and every vial comes with the paperwork to prove what's in it.
Why Seren Bio Labs
Quality and confidence in every order
Your work is only as good as what's in the vial. Everything we do is about removing doubt before it reaches your bench.
Tested, not claimed
Every batch is purity-tested before release. We publish the results rather than asking you to take our word for it.
It is what the label says
Each batch is checked to confirm the compound is genuinely what it claims to be — not a close relative, not a blend.
Handled properly
Freeze-dried, sealed and kept cool from our shelf to your door, so it arrives in the same condition it left in.
Easy to deal with
Simple ordering, plain packaging, quick UK dispatch, and a real person on the other end of an email.
Catalogue
View all compounds
Premium peptides for trusted research
Quality control standard
How to tell good from bad
Anyone can print "99% pure" on a label. These are the four things that actually back it up — useful whoever you buy from, and all four are what we do here.
How much of it is the real thing
A purity test separates out everything in the vial and measures how much is the compound itself. Good material comes back at 99% or better.
Whether it's the right compound
A second test weighs the molecule. If the weight doesn't match what it should be, you haven't got what you paid for.
What it looks like in the vial
Properly freeze-dried material is a clean, even solid under vacuum, and dissolves without cloudiness or bits. Sloppy handling shows.
Whether they'll show you the results
A Certificate of Analysis ties the test results to your actual batch number. If a supplier won't provide one, that tells you something.
About us
Built around one standard
We supply research-grade compounds to laboratories, analytical facilities and independent researchers — people who need the next batch to behave like the last one.
That consistency comes from doing the unglamorous parts properly: controlled production, careful sealing and storage, and testing every batch before it goes out. Then we publish the results.
More about Seren Bio LabsWhat every batch goes through
- 01Made to a controlled, repeatable process
- 02Purified and tested to 99% or better
- 03Freeze-dried and sealed under nitrogen
- 04Certificate of Analysis tied to your batch number
- 05Kept cool and sealed until it reaches you
Trusted by researchers
What laboratories tell us
★★★★★
"The analytical purity of the batch we received matched our internal mass spectrometry standard within a 0.01% margin, and puck density was consistent across all ten vials."
★★★★★
"Ordering was straightforward and dispatch ran to cold-chain. Certificate of Analysis data was available for verification before the sample arrived."
★★★★★
"Reconstitution was immediate with complete solution clarity and no insoluble particulates detected under optical analysis. Packaging was secure and professionally presented."