S-23 15mg
Mastorin

Research SARMS
BioPlex Peptides Uk

Batch Documentation-Identity & Purity Control

Buy SARMs UK from BioPlex Peptides, with a capsule range built around our own raw powder sourcing, selected manufacturing specification, and stronger control over final product quality. Rather than relying on generic ready made stock, BioPlex sources its own raw SARMs powders and has capsules produced in the UK to our chosen specification. This gives us greater control over capsule strength, colour coding, presentation, and batch consistency across the range. Where many sellers offer standard 10mg capsules, BioPlex also offers stronger 15mg capsule specifications on selected lines, helping set our SARMs capsules apart within the UK market.

By sourcing our own raw powders and controlling how they are manufactured into capsules, we are able to maintain a more consistent standard across our SARMs for sale UK range. This supports clearer product identity, tighter internal control, and a more premium finished capsule compared with many off the shelf alternatives sold online. Our aim is to offer some of the best quality SARMs capsules available to buy online in the UK.

BioPlex also offers trade customers the option to buy SARMs raw powders and arrange capsule production to their own required specification. Through our Trade Supply Range and Product Catalogue Page, customers can enquire about custom capsule strengths, colour coded capsule options, and tailored production formats to suit their own supply requirements. This gives trade buyers greater flexibility while benefiting from BioPlex sourcing standards and UK based capsule manufacturing support.

Research Compound Summary

S-23 is studied as a selective androgen receptor ligand used to interrogate androgen receptor signalling in controlled experimental systems. The androgen receptor is a nuclear hormone receptor that, when activated by a ligand, can translocate to the nucleus, bind androgen response elements on DNA, and recruit coactivator or corepressor proteins that reshape transcription. In AR expressing cell models, S-23 is used to map ligand driven transcriptional programmes and compare signalling strength, duration, and selectivity versus other reference ligands. Typical approaches include receptor binding and competition assays, AR reporter systems, nuclear localisation imaging, and chromatin occupancy studies, paired with transcript panels such as KLK3, FKBP5, and TMPRSS2 plus broader RNA sequencing readouts.

Technical Specification

Synonyms: Mastorin, S-23, S23, S 23
Chemical Class: Selective androgen receptor modulator
Long Chemical Name: (IUPAC style listing): (2S)-3-(4-chloro-3-fluorophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropanamide.
Molecular Weight: 416.75 g/mol.
Formula: C18H13ClF4N2O3
Contains: 9.99% Mastorin (S-23)
CAS/Batch: OS001-03-2026
Storage: Store between 10-15°C
Purity: 99.4% documented under batch specific testing

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Disclaimer

For research purpose only, Not for human consumption.