Description
Pure Rawz S-23 is a nonsteroidal SARM, available as capsules, tablets, a liquid, a powder and an injectable solution. Every batch is tested for 99% purity or better, and it’s sold for laboratory research only.
S-23 explained
S-23 is a nonsteroidal SARM from the same research group at the University of Tennessee that worked on andarine. It binds the androgen receptor with very high affinity.
It was studied mainly as a possible male hormonal contraceptive and has never been tested in human trials.
How it works
SARMs bind the androgen receptor and switch it on, but the way the receptor changes shape depends on the tissue’s co-regulator proteins. That’s why they act strongly in muscle and bone and more weakly in the prostate and skin.
They still suppress LH, FSH and the body’s own testosterone through feedback on the pituitary, so hormone markers belong in any study.
S-23 research
Jones and colleagues published the main study in Endocrinology in 2009. In male rats, S-23 combined with estradiol suppressed sperm production reversibly while keeping muscle mass and bone density.
Once the compound was stopped, fertility returned in the rats, which is why the paper framed it as a contraceptive candidate.
For the studies themselves, try this PubMed search.
S-23 sizes and forms
There are 9 ways to buy it, from $34.82 to $167.13:
- Capsules, 20mg per capsule/60ct/1.2g: $167.13
- Tablets, 15mg per tablet/35ct/525mg: $73.12
- Tablets, 15mg per tablet/70ct/1050mg: $146.23
- Liquid, 15ml/17mg per ml/250mg: $34.82
- Liquid, 30ml/17mg per ml/500mg: $69.63
- Liquid, 30ml/33mg per ml/1000mg: $139.28
- Powder, 500mg: $69.63
- Powder, 1000mg: $139.28
- Injectable, 10ml/64mg per ml = 640mg: $89.14
Capsules hold a measured amount each, listed in the size option with the count and total.
Tablets are pressed with a fixed amount per tablet, shown in the size option along with the count.
The liquid comes in a glass dropper bottle at a stated concentration per mL, so every draw is easy to calculate.
Powder suits labs that want to make their own solutions or capsules. Weigh it on a milligram scale.
The injectable form is a sterile solution in a sealed vial at a stated concentration per mL.
How labs use it
Labs comparing SARMs usually match exposure time and measure the same panel across compounds: muscle and prostate weight in rodents, plus hormone and lipid markers. That tissue-selectivity ratio is what SARM research is built around.
Liquids make small, even measurements easy, while capsules and tablets suit studies that need a fixed amount per unit.
Run a baseline panel before exposure starts. Without it, hormone changes are hard to interpret.
Measuring the liquid
At 17mg per mL, every 1mL holds 17mg and every 0.1mL holds 1.7mg. A graduated 1mL dropper or syringe makes those measures accurate.
S-23 specifications
- Compound: S-23
- Class: nonsteroidal SARM
- Forms: capsules, tablets, liquid, powder and injectable
- Options: 9 sizes and forms
- Purity: 99% or higher, verified by first- and third-party testing
- Use: laboratory research only
Purity and batch testing
Every batch is tested before it goes on sale. Identity is checked by mass spectrometry, and purity by HPLC, with a target of 99% or higher.
Each container is labeled with the product, the amount and the batch number. Email us that number and we’ll send the certificate of analysis for your batch.
How to store S-23
Keep the container sealed at room temperature, away from heat, moisture and sunlight. Store liquids at room temperature with the cap screwed on, away from heat and light.
Label the container with the opening date. It saves guesswork later.
Safe handling
Wear gloves and eye protection when you open or measure it, and work on a clean surface.
Label everything you prepare, keep it away from food areas, and follow your lab’s rules for disposing of sharps and chemical waste.
What you’ll need
- a graduated 1mL dropper or syringe for accurate volumes
- a milligram scale, since powder has to be weighed
- a suitable solvent if you’re making your own solution, such as DMSO or propylene glycol
Other compounds to look at
- Super Mass Bombs: Super Mass Bombs packs have 5,000mg creatine monohydrate, 2,500mg beta-alanine and 2,000mg L-carnitine tartrate.
- SARM Transdermal Stack (S-23 + YK-11 + LGD-4033 + Laxogenin), combining S-23, YK-11, LGD-4033 and Laxogenin
- RAD-140 + MK-677 + YK-11 Value Pack, combining RAD-140, MK-677 and YK-11
- RAD-140 + S-23 Injectable, combining RAD-140 and S-23
- S4 Andarine + Cardarine Stack (GW-501516), combining S4 Andarine and GW501516
You can also browse our full SARMs pages.
Common questions about S-23
Can it be used in people or animals?
No. It’s sold for laboratory research only and isn’t approved for human or veterinary use.
How should I store it?
Follow the storage section above. In short: cold and dark for freeze-dried vials, room temperature and dry for capsules, tablets, powders and liquids, unless the label says otherwise.
What forms does it come in?
Capsules, tablets, a liquid, a powder and an injectable solution. Pick the one you want from the dropdown on this page.
Is S-23 in stock?
Yes. It’s in stock and ships from our warehouse after your order clears.
Does it come with a certificate of analysis?
Yes. Every batch is tested, and we’ll email the certificate of analysis for your batch number on request.
Buy S-23 from Pure Rawz
S-23 is in stock from $34.82. Choose your option, add it to the cart and check out in a couple of minutes.
Need more for the same project? Have a look at our SARMs.
For laboratory research use only. Not for human or veterinary use. These statements have not been evaluated by the FDA.
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