The range · 2026

The range.

RU-58841 and pyrilutamide. Each one independently assayed for purity, each shipped with its Certificate of Analysis.

Orders open at launch · first batches are bottled and with the lab

Independently assayed

Third-party lab, per batch

CoA on every order

Signed and verifiable

Free UK delivery over £70

Tracked, same-day dispatch

Multi-buy savings

Lower price per bottle

Save up to 23%

BATCH 3058250 mg/mL

RU-58841 5% Solution

A 5% topical antiandrogen research solution, batch-tested.

✓ CoA verified✓ UK dispatch✓ Multi-buy saving

COMING SOON · FROM£27.99

Save up to 12%

BATCH 412765 mg/mL

Pyrilutamide (KX-826) 0.5% Solution

A 0.5% topical antiandrogen research solution, batch-tested.

✓ CoA verified✓ UK dispatch✓ Multi-buy saving

COMING SOON · FROM£37.99

BATCH 20416Reference powder

RU-58841 Powder

Synthetic nonsteroidal antiandrogen, reference powder for research.

✓ CoA verified✓ UK dispatch

COMING SOON · FROM£28.00

BATCH 10237Reference powder

Pyrilutamide (KX-826) Powder

Selective androgen-receptor antagonist, reference powder for research.

✓ CoA verified✓ UK dispatch

COMING SOON · FROM£70.00

Free UK delivery over £70 · Tracked dispatch · Multi-buy savings on every compound

Standard · Every order

What ships with every bottle.

Certificate of Analysis

Signed, batch-specific, publicly verifiable with the lab.

Amber UV glass

Photoprotective bottle with a graduated glass dropper.

Tracked UK dispatch

Tracked courier, sent from the UK.

Batch traceability

Every bottle carries its batch code back to its CoA.

Compliance

Everything in this catalogue is sold strictly for laboratory research use. Nothing here is a licensed medicine, and we make no medical or treatment claims. Each batch is assayed by an independent laboratory and its Certificate of Analysis is publicly verifiable.

How we test →