Two-bottle research bundleOne 30 mL bottle each of S4 and Cardarine, supplied together at a bundle discount.
50 & 20 mg/mLS4 at 50 mg/mL (1,500 mg) and Cardarine at 20 mg/mL (600 mg), each with under 5% variance.
Independently verifiedEach compound is HPLC-tested by an accredited US third-party lab for purity and identity.
Research use onlySupplied exclusively for laboratory investigation and development.
| Compound Class | Selective Androgen Receptor Modulator (SARM) · Non-steroidal |
|---|---|
| Concentration | 50 mg/mL |
| Composition | USP-grade PEG-400 base, S4 (≥99% purity) |
| CAS Number | 401900-40-1 |
| Chemical Formula | C19H18F3N3O6 |
| Molar Mass | 441.36 g/mol |
| Synonyms | S4, Andarine, GTx-007, S-4 |
| Volume | 30 mL per bottle (1,500 mg total) |
| Verified Purity | Batch-tested to 99.74% (HPLC) |
| Compound Class | PPARδ Agonist · Metabolic Modulator · Non-steroidal |
|---|---|
| Concentration | 20 mg/mL |
| Composition | USP-grade PEG-400 base, GW-501516 (≥99% purity) |
| CAS Number | 317318-70-0 |
| Chemical Formula | C21H18F3NO3S2 |
| Molar Mass | 453.5 g/mol |
| Half-Life | ~16–24 hours (model-dependent) |
| Synonyms | Cardarine, GW-501516, GW1516, Endurobol |
| Volume | 30 mL per bottle (600 mg total) |
| Verified Purity | Batch-tested to 99.57% (HPLC) |
For laboratory research use only. Not for human or animal consumption.
Each compound in this bundle is analyzed by an accredited US third-party laboratory before it ships.
Accredited testing partner
Purity and identity confirmed by MZ Biolabs (Tucson, AZ), a US DEA-licensed analytical facility, via HPLC purity analysis and mass-spectrometry identity confirmation under GLP standards.
Published certificates of analysis
Our third-party certificates of analysis are published on our website — no login required.
See all certificates of analysis
Both bottles are built to preserve compound integrity throughout your research timeline.
Quality control across the research-compound industry is inconsistent, which makes third-party verification essential. A 2017 analysis published in JAMA examined 44 products marketed online as SARMs and reported wide gaps between labels and contents.
52%contained the labeled compound
39%contained an unapproved drug
25%contained an unlabeled substance
9%contained no active ingredient
Source: Van Wagoner et al., JAMA, 2017 (ref. 3).
Third-party tested & certified
Both compounds verified by MZ Biolabs (Tucson, AZ), an accredited US laboratory, via HPLC and mass spectrometry.
USP-grade PEG-400
Suspended in the highest grade carrier and bottled in America.
Glass bottles, fixed glass droppers
Prevents BPA leaching and avoids contamination from external tools.
60-day money-back guarantee
Transparent business, standard payment methods, no misrepresentation.
Component 1
A non-steroidal selective androgen receptor modulator (SARM). Mechanistically, it binds the androgen receptor with tissue-selective affinity, distinguishing it from steroidal androgens. It was developed as an investigational compound through programs associated with GTx, Inc. (ref. 1).
Component 2
A synthetic PPARδ (peroxisome proliferator-activated receptor delta) agonist. Mechanistically, it binds and activates the PPARδ nuclear receptor. Although commonly catalogued and sold alongside SARMs, it is mechanistically distinct and does not bind the androgen receptor (ref. 2).
Both compounds remain experimental research chemicals, supplied strictly for laboratory research. Sports Technology Labs makes no claims regarding their effects, and nothing in this listing should be interpreted as describing outcomes in humans or animals.
Not approved for human use
S4 and Cardarine are investigational compounds. They are not approved by the FDA and are not dietary supplements, drugs, or food. Marketing them for human ingestion is unlawful.
WADA-prohibited
Both are prohibited by the World Anti-Doping Agency: S4 (Andarine) under S1 (Anabolic Agents — SARMs) and Cardarine under S4 (Hormone and Metabolic Modulators), banned in- and out-of-competition (ref. 4).
Legal status for research
In the United States, neither is a controlled substance and both may be legally purchased and possessed for laboratory research use.
Our position
Sports Technology Labs are chemical suppliers, not medical providers. We do not condone or encourage consumer use of research compounds.
Research use only. All products on this website are intended exclusively for laboratory research and development. They are not for human or animal consumption. These statements have not been evaluated by the U.S. Food and Drug Administration, and these products are not intended to diagnose, treat, cure, or prevent any disease.
| Weight | 6 oz |
|---|---|
| Dimensions | 5 × 3 × 2 in |
