Liquid Ostarine (MK-2866) 25 mg/mL

Description

Liquid ostarine is our most popular starting point for SARM research. Each 30 mL bottle holds MK-2866 at 25 mg/mL (750 mg total) in USP-grade PEG-400, with a glass dropper fixed into the cap so you can measure straight from the bottle.

Buy liquid ostarine online

You’ll find it in our liquid SARMs category alongside the other single compounds. If you’d rather work from dry material, there’s ostarine powder in a 2 gram pouch. Ostarine is also the base of a few stacks, like the MK-677 and ostarine stack and the ostarine and cardarine stack.

What is liquid ostarine?

Ostarine, also known as MK-2866 or enobosarm, is a non-steroidal selective androgen receptor modulator. GTx Inc. developed it to treat muscle wasting in cancer patients and, later, stress urinary incontinence. It binds the androgen receptor in muscle and bone while having much less effect on tissues like the prostate.

It’s one of the few SARMs that has made it through multiple human trials, which is why there’s more published data on ostarine than on almost any other compound in our catalog.

Ostarine clinical research

In a 12-week phase II trial of 120 healthy older men and postmenopausal women, 3 mg a day of enobosarm increased lean body mass and improved stair-climb power compared with placebo. A later trial in cancer patients with muscle loss also showed gains in lean mass.

Enobosarm still isn’t approved by the FDA for any use, and studies report some suppression of natural testosterone and changes in HDL cholesterol. The full trial record is searchable on PubMed.

Liquid ostarine specifications

• Compound: Ostarine (MK-2866, enobosarm)
• CAS number: 841205-47-8
• Formula: C19H14F3N3O3
• Molar mass: 389.33 g/mol
• Half-life: About 24 hours
• Class: Selective androgen receptor modulator
• Concentration: 25 mg/mL
• Volume: 30 mL (750 mg total)
• Carrier: USP-grade PEG-400
• Packaging: Glass bottle with a fixed glass dropper
• Purity: 98.04% (COA 07/08/25)
• SKU: 4

Measuring and storage

At 25 mg/mL the math is simple: 1 mL holds 25 mg, 0.5 mL holds 12.5 mg and 0.25 mL holds 6.25 mg. The full 30 mL bottle holds 750 mg. Draw from the fixed glass dropper and read the volume at eye level.

Keep the cap tight and store the bottle upright in a cool, dry place out of direct sunlight. PEG-400 doesn’t need refrigeration. If the solution looks cloudy after cold shipping, let it sit at room temperature and swirl it gently.

Lab testing and certificate of analysis

Every batch of our liquid ostarine is tested by MZ Biolabs, an independent lab in Arizona, and bottled in the USA. The current certificate of analysis is dated 07/08/25 and shows a purity of 98.04%. We don’t ship a batch until its COA is back, and you’re welcome to ask us for a copy before you order.

Liquid ostarine FAQ

What is the difference between liquid ostarine and ostarine powder?

The compound is the same. The liquid is already dissolved at a known concentration, so it’s quicker to measure. The powder suits labs that weigh and prepare their own solutions.

Does ostarine suppress testosterone?

Published trials report a dose-related drop in total testosterone and SHBG in some subjects. It’s milder than with steroids, but it’s there.

How long does liquid ostarine last?

Stored sealed in a cool, dry place away from sunlight, the solution stays stable for a long time. Check the label for the batch date.

Why researchers buy from Sports Technology Labs

We’re an American company, and we keep the process simple. Raw material has to test at 98% purity or higher. Liquids are made with USP-grade PEG-400 and bottled in glass in the USA. Every batch goes to MZ Biolabs in Arizona for testing, and we publish the purity and COA date on the product page so you know what you’re getting before you order.

Shipping, returns and support

We offer free US shipping on orders over $149, plus an express option at checkout. If something isn’t right, our 60-day money-back guarantee covers it. You can email us any time with questions about testing, storage or your order.

For laboratory research use only

Liquid ostarine is supplied strictly for laboratory and analytical research. It is not approved by the FDA, is not a dietary supplement and must not be used in people or animals. Nothing here is medical advice, and we won’t sell it for personal or athletic use.

Add liquid ostarine to your cart now. Orders over $149 ship free, so it’s worth pairing it with something from our SARMs stacks.