RAD-140 and RU-58841 Stack

$109.00

Category: SARMs Stacks

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RAD-140 and RU-58841 Stack For Sale

About All Products

Glass bottles with UV resistance to minimize degradation.
Tamper-proof seals to ensure safety in transit.
Less than 5% variance in concentration, guaranteeing consistency.
Formulated and packaged to prevent evaporation in storage.
SKU: 32

FAQs for RAD-140 and RU-58841 Stack

What is the mechanism of action of stacking RAD-140 and RU-58841?

RAD-140 is a selective androgen receptor modulator (SARM) that binds to androgen receptors in muscle tissue and promotes muscle growth and strength.

RU-58841 is a non-steroidal antiandrogen (NSAA) that blocks the conversion of testosterone to dihydrotestosterone (DHT).

DHT is a more potent form of testosterone that is responsible for male pattern hair loss. By blocking DHT, RU-58841 can help prevent or slow hair loss.

What is the chemical structure of RAD-140?

RAD-140, also known as tiramesine, is a selective androgen receptor modulator (SARM) with the chemical formula C19H24N2O2.

It is structurally similar to testosterone, but it has a higher affinity for the androgen receptor (AR) and a more substantial androgenic effect than testosterone.

What is the mechanism of action of RAD-140 in animals?

RAD-140 binds to the AR and activates it, leading to increased protein synthesis and muscle growth in animals. It also has anti-catabolic effects, meaning that it helps to prevent muscle breakdown.

What is the mechanism of action of RU-58841 in animals?

RU-58841 binds to the melanocortin-4 receptor (MC4R) and inhibits its activity in animals. The MC4R is involved in regulating appetite and energy expenditure. By inhibiting the MC4R, RU-58841 can help to reduce appetite and increase energy expenditure.

Why is Sports Technology Labs the best place to buy SARMs online?

A recent study involving chemical analyses of 44 different products sold and marketed as selective androgen receptor modulators on the internet revealed that quality control in this industry varies significantly from one company to the next.

Only 52% of the products tested contained the product advertised, 59% contained amounts that differed from the label, a shocking 39% contained other unapproved drugs, 25% contained substances not listed on the label, and 9% contained no active substance at all.

It is critical when performing research with SARMs to only purchase the highest quality, verified by third-party analysis.

If you are trying to figure out where to buy SARMs stacks, there appears to be no shortage of options out there. Sports Technology Labs is the best place to buy SARMs online because of their consistent, verifiable, high-quality products, safe bottling and packaging, fast shipping, and excellent customer service.

When you buy SARMs from Sports Technology Labs, you are choosing the highest quality ingredients. Minimum 98% pure compounds tested and certified by accredited American third-party labs, suspended in USP-grade (the highest grade) PEG-400, bottled in America.

Our products come in glass bottles with fixed glass droppers to prevent the leaching of unwanted plasticizers like BPA, and to avoid contamination when using external measuring tools.

All Sports Technology Labs SARMs are third-party tested by MZ Biolabs, an independent laboratory based in Arizona. Each batch is bottled and tested in the USA to ensure accuracy and purity. Our Certificates of Analysis confirm that products meet the listed specifications:

RAD-140/Testolone

Date: 10/17/2025
Purity Level: 97.5%

Data on Our Liquid RAD-140 for Sale

CAS Number: 1182367-47-0
Formula: C20H16ClN5O2
Molar Mass: 393.83 g/mol
Half-life: 44.7 hours
Class: Selective androgen receptor modulator
Storage: Store in a cool, dry place away from direct sunlight to maximize shelf life.

Data on ‘Our RU-58841 for Sale

CAS Number: 154992-24-2
Formula: C17H18F3N3O3
Molar mass: 369.3 g/mol
Class: Androgen receptor antagonist
Storage: Store in a cool, dry place away from direct sunlight to maximize shelf life.

Abuse Warning

Selective androgen receptor modulators are investigational compounds still awaiting FDA approval and are not dietary supplements.

At Sports Technology Labs, we are chemical suppliers, not medical doctors, and our expertise is sourcing and quality control. Sports Technology Labs does not encourage or condone consumer use of SARMs products; they are for research purposes only.

Anecdotal reports and guides may not match those used in carefully designed medical research protocols and may pose a serious risk of adverse effects in users. Individual variables, comorbidities, and polypharmacy can also contribute significantly to the risk of health problems.

Selective androgen receptor modulators should only be used under the supervision and direction of a medical doctor or designated research authority.

We strongly discourage the use of SARMs for performance enhancement in sports and bodybuilding, and warn against “bro science” and peer consensus when making decisions about health.