Andarine Powder (S4) 2g

Description

Our Andarine powder is 2g of pure Andarine (S4) for labs that make their own solutions. It’s a nonsteroidal selective androgen receptor modulator (SARM). It’s intended for lab and analytical work only.

Background on Andarine (S4)

S4 (andarine, also GTx-007) is one of the first nonsteroidal SARMs, developed by GTx Inc. alongside ostarine. It’s a partial agonist at the androgen receptor, and in rats it built muscle and bone while having much less effect on the prostate.

Development stopped before late clinical trials. It’s on the WADA prohibited list.

What S4 does in cells

S4 binds the androgen receptor as a partial agonist. In muscle and bone it gives close to a full response, while in the prostate it gives a weaker one, and in the presence of full androgens it can even compete with them there.

That partial agonism is the main point of interest. Researchers use S4 to study how a receptor that’s only half switched on behaves in different tissues.

Andarine powder technical data

• Compound: Andarine (S4)
• Also known as: andarine, S-4, GTx-007
• CAS number: 401900-40-1
• Molecular formula: C19H18F3N3O6
• Molecular weight: 441.4 g/mol
• Structure: nonsteroidal aryl-propionamide
• Amount: 2g (2,050mg net per pouch)
• Form: crystalline powder in a sealed pouch
• Purity: 99.74% by HPLC, identity by mass spectrometry
• WADA status: prohibited, class S1.2
• Tested by: MZ Biolabs, Tucson, Arizona
• SKU: STL-S4-P
• Intended use: laboratory research only

Published studies on S4

Gao and colleagues reported in Endocrinology in 2005 that S4 restored muscle and bone in castrated rats. Kearbey and colleagues later showed it reduced bone loss in ovariectomized rats.

S4 is also known for binding androgen receptors in the eye, and animal studies linked it to changes in vision, which is one reason development didn’t go further.

Every study mentioned here is indexed on PubMed, the free database run by the NIH. Try this S4 Andarine search.

S4 and its alternatives

In one line, S4 is an early partial-agonist SARM from GTx with rat data on muscle and bone. The compounds researchers most often weigh it against:

• Ostarine is the most studied SARM, with human trial data on muscle wasting
• LGD-4033 binds the androgen receptor very tightly and has a phase 1 study in healthy men
• RAD-140 is a potent nonsteroidal SARM from Radius Health, later tested in breast cancer
• RAD-150 is a benzoate ester of RAD-140 with no published studies of its own
• S23 is a high-affinity SARM studied as a male contraceptive in rats

All of them bind the androgen receptor, but affinity, selectivity and the amount of published data differ a lot. Compare them in our SARM powders.

Andarine powder certificate of analysis

Every batch is sent to MZ Biolabs in Tucson, Arizona, before it goes on sale. They run HPLC for purity and mass spectrometry to confirm identity. The latest certificates for this product read 99.74%.

You’ll find the COA in the photo gallery above. Open it and check the date, the method and the purity figure yourself.

Both numbers matter. Purity by HPLC means little if nobody checked the identity, and that’s the job mass spectrometry does.

You also get a 60-day money-back guarantee on the order.

Weighing and dissolving Andarine powder

The pouch holds 2,050mg of crystalline S4, slightly more than the stated 2g. Use a calibrated analytical balance and an anti-static spatula, because fine powder sticks to plastic.

PEG-400 is the usual solvent for a stock solution, and the maths works like this:

• 2000mg in 50mL gives 40mg/mL
• 2000mg in 100mL gives 20mg/mL

Warm the solvent slightly and stir until no crystals remain. A magnetic stirrer saves time.

Keeping Andarine powder dry

Store the powder in its resealed pouch in a cool, dry, dark place. Adding a desiccant packet to a secondary container helps in humid labs.

More from our SARM powders

• RAD-150 Powder (TLB-150) 2g, the SARM ester as bulk powder
• YK-11 Powder 1g, the steroidal SARM as bulk powder
• PEG-400 (Polyethylene Glycol 400) 60mL, the solvent for making your own solutions
• RAD-140 Powder (Testolone) 2g, the SARM as bulk powder
• SR-9009 Powder (Stenabolic) 2g, the REV-ERB agonist as bulk powder

Browse the full list in our SARM powders, or go back to the Sports Technology Labs home page to see every category.

Andarine powder FAQ

How much is in a pouch of Andarine powder?

2,050mg net, a little over the 2g on the label.

What do I dissolve Andarine powder in?

Most labs use PEG-400, which we also sell.

How should Andarine powder be stored?

Sealed, dry and away from light, at room temperature or cooler.

Can Andarine powder be used in people or animals?

No. Sports Technology Labs sells it for laboratory research only. It isn’t approved for human or veterinary use.

Is Andarine powder in stock?

Yes, Andarine powder is in stock today.

Get Andarine powder from Sports Technology Labs

Andarine powder is in stock at $67.99 per pouch, with free worldwide shipping. Add it to your cart and check out in a minute. Pay with crypto and you save 15%.

Compounds that fit the same study sit in our SARM powders.

Sports Technology Labs sells this product for laboratory and in-vitro research only. It isn’t a medicine, food or dietary supplement, and it must not be given to people or animals. The FDA has not evaluated any statement on this page. S4 is on the World Anti-Doping Agency prohibited list (S1.2, anabolic agents), so tested athletes should not handle it outside a lab. Buyers must be 21 or older.