SKU: 65471735775

ANDARINE (S4) Powder, 1gr

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Description

ANDARINE (S4) Powder, 1grAndarine S 4 S 4, better known as Andarine and also referred to as Androxolutamide or GTx 007, is a Selective Androgen Receptor Modulator (SARM). In a notable study conducted by Gao et al., S 4 was characterized as an androgen receptor agonist in orchidectomized rats. The mechanism of action was found to focus on skeletal muscles, bones, and the pituitary gland. Effects of S 4 on Muscle Mass Male rats were treated for 8 weeks following castration with

Andarine S-4

S-4, better known as Andarine and also referred to as Androxolutamide or GTx-007, is a Selective Androgen Receptor Modulator (SARM). In a notable study conducted by Gao et al., S-4 was characterized as an androgen receptor agonist in orchidectomized rats. The mechanism of action was found to focus on skeletal muscles, bones, and the pituitary gland.

Effects of S-4 on Muscle Mass

Male rats were treated for 8 weeks following castration with either 3 mg/kg or 10 mg/kg of S-4. The study showed that both dosages were effective in restoring muscle mass and strength, both in the soleus muscle and in the levator ani muscle, to levels comparable to those of intact male rats. Read more here.

Treatment with S-4 had a minimal impact on the weight of the prostate and seminal vesicles, approximately 16-17%. However, strong androgenic effects on the prostate and seminal vesicles were observed.

Furthermore, both dosages exhibited strong agonistic activity in the pituitary gland, resulting in decreased plasma levels of both luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in the castrated male rats. Read more here.

Effects of S-4 on Bone Mineral Density

According to the study by Gao et al., an 8-week treatment with S-4 resulted in a significant increase in bone mineral density in castrated male rats.

In another study conducted by Kearbey et al., female Sprague-Dawley rats were treated to investigate the effects of S-4 on accelerated bone loss caused by ovariectomy. This study concluded that S-4 treatment not only maintained cortical content and overall bone mineral density but also increased bone strength while simultaneously reducing total body fat. Read more here.

Kearbey et al. also concluded that treatment with S-4 has positive effects on both skeletal muscles and bones. It was suggested that S-4 treatment could reduce the risk of fractures by both increasing bone mineral density and strengthening bones and skeletal muscles, which in turn reduces the likelihood of falls. Read more here.


DISCLAIMER

This material is sold for use in laboratory research only. Terms of sale apply. Not for human consumption, nor for medical, veterinary or domestic use. Please familiarize yourself with our DISCLAIMER before ordering.

Data Sheet

Andarine (S-4) – Powder, 1gr

Application Selective Androgen Receptor Modulator
CAS 401900-40-1
Molar Mass 441.357 g/mol
 Chemical Formula C19H18F3N3O6
IUPAC Name (2S)-3-(4-acetamido-phenoxy)-2-hydroxy-2-methyl-N-(4-nitro-3-trifluoromethyl-phenyl)-propionamide
Synonyms Andarine, Andarin, S-4, S-40503, GTx-007
Storage Room temperature
Solubility Soluble in Ethanol, PEG400
Organoleptic Profile Pale yellow fine powder
Physical Form Solid
Specification ≥98%
Terms This material is sold for laboratory research use only. Terms of sale apply. Not for human consumption, nor medical, veterinary, or household uses. Please familiarize yourself with our Terms & Conditions prior to ordering.
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SKU: 65471735775

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Sumerr Scott
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★★★★★ 5
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My dogs favorite toy. It’s so small and cute lol it’s lightweight and easy for her to chew. The quality is great, it’s lasting and no broken pieces.
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Reviewed in the United States on March 18, 2026
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mkk
Carnegie, US
★★★★★ 5
Winnie Loves Them!
Size: Medium (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
My Winnie is an aggressive chewer and she loves these bones. They're indestructible and they must be delicious because she works on them every day. I was a bit concerned when they were out of stock for a few months. Please don't discontinue them!
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Reviewed in the United States on April 28, 2026
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Amazon Customer
Port Orchard, US
★★★★★ 4
Not bad for the price
Size: Medium (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
Good for chewing but my little dog had trouble with the brown food coming off in bigger than should be chunks
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Reviewed in the United States on June 3, 2026
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Helen woods
Charlottesville, US
★★★★★ 5
Dog chews nylon bones
Size: Large (Pack of 3), Color: Varies, Pattern Name: clean tuff
My French bulldogs love 💕 these unfortunately small pieces come off and get caught in their throats the fore I will not purchase any in the future thank you
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Reviewed in the United States on May 21, 2026
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V in AZ
Omaha, US
★★★★★ 5
Weird to humans, amazing to dogs!
Size: Large (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
I find these expensive and weird, and yet I'm not the one chewing them and both of my dogs disagree. They feel they are amazing and tasty! They love to chew on these, and chew, and chew. Who am I to argue?
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Reviewed in the United States on April 24, 2026

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