Ostarine (Enobosarm)
Aryl-propionamide SARM reference standard. GTx's phase II compound.
Also known as: OST · Ostarine · MK-2866 · Enobosarm · GTx-024
CAS 841205-47-8 · C19H14F3N3O3
Lead time
Ships in 3–5 days
Purity
99.0%
CAS Number
841205-47-8
Molecular Weight
389.3
Formula
C19H14F3N3O3
Form
Lyophilized powder
Packaging
10mg vial · 10 vials/box
Storage
Room temperature, dry
Solubility
DMSO, ethanol
Chemical structure

2D structure · Source: PubChem (NIH)
Research applications
Ostarine (enobosarm, GTx-024) is a nonsteroidal selective androgen-receptor modulator studied for tissue-selective anabolic signaling in muscle and bone. It is the most clinically advanced SARM: double-blind phase II trials evaluated 1–3 mg daily dosing on lean body mass and physical function in healthy older adults and cancer cachexia. Supplied as a precisely weighed reference standard for AR-binding and LC-MS/MS analytical research.
Quality Documentation
How we verifyRaw material screening
Off-spec lots never enter synthesis
In-process monitoring
Intermediates characterized at checkpoints
HPLC-MS verification
Identity, purity & quantitation per batch
A batch-specific COA ships with every order — see the format before you buy.
Request sample COAFrequently asked questions
What is Ostarine (Enobosarm)?
Ostarine (enobosarm, GTx-024) is a nonsteroidal selective androgen-receptor modulator studied for tissue-selective anabolic signaling in muscle and bone. It is the most clinically advanced SARM: double-blind phase II trials evaluated 1–3 mg daily dosing on lean body mass and physical function in healthy older adults and cancer cachexia. Supplied as a precisely weighed reference standard for AR-binding and LC-MS/MS analytical research.
What purity is Ostarine (Enobosarm)?
99.0% purity, HPLC-MS verified per batch.
What is the CAS number of Ostarine (Enobosarm)?
CAS 841205-47-8 · Molecular formula C19H14F3N3O3 · Molecular weight 389.3.
How long does Ostarine (Enobosarm) take to ship?
Ships in 3–5 days after order confirmation.
How should Ostarine (Enobosarm) be stored?
Room temperature, dry. Solubility: DMSO, ethanol.
Is Ostarine (Enobosarm) for human use?
No. Ostarine (Enobosarm) is a research compound for laboratory research use only — not for human or veterinary use.
For pricing and availability of Ostarine (Enobosarm), contact our research team.
For laboratory research use only.
Related compounds

Testolone (RAD-140)
High-affinity benzyl-propionamide SARM from Ligand's preclinical series.
CAS 1182367-47-0
10mg vial · In stock

Ligandrol (LGD-4033)
Fluorophenyl oxadiazole-class SARM studied in bone-mass protocols.
CAS 1165910-22-4
10mg vial · In stock

Andarine (S-4)
Nitrophenoxy-acetamide prototype from Ligand's original SARM series.
CAS 401900-40-1
10mg vial · In stock

SR-9009 (Stenabolic)
REV-ERB agonist often shelved with SARMs — mechanism is distinct.
CAS 1379686-30-2
10mg vial · In stock
Related journal
LGD-4033 (Ligandrol) Research Reference: The Human-Trial SARM With a Suppression Fine-Print
Ligandrol is one of few SARMs with published human-phase data — and that data is precisely what makes it a documentation-first research compound. Chemistry, trial record, and analytical specs.
Ostarine vs RAD-140: What Preclinical Science and One Abandoned Trial Program Show
The two most-searched SARMs compared on the only axes that hold up: receptor pharmacology, published human trial data (one has them, one doesn't), and what the enobosarm program's end tells researchers.
RAD-140 (Testolone) for Research Reference: Chemistry, Potency Data, and What the Absence of Human Trials Means
Testolone is the highest-affinity SARM in most published receptor panels — and has zero completed human trials. What preclinical science establishes, what it cannot, and how to spec it analytically.