What is Clenbuterol?
Clenbuterol is a selective beta-2 adrenergic receptor agonist activating β2-AR in bronchial smooth muscle (bronchodilation), adipose tissue (lipolysis/thermogenesis via cAMP/HSL), and skeletal muscle (anti-catabolic via β2-AR/cAMP/PKA → protein synthesis, reduced proteolysis). CAS 21898-19-1.
Research Applications
Beta-2 Adrenergic Pharmacology β2-AR agonism — bronchial, adipose, skeletal muscle targets Thermogenesis/Lipolysis cAMP/HSL fat mobilisation and heat production Skeletal Muscle Anti-Catabolism Beta-2 → PKA → protein synthesis, reduced UPS proteolysis Bronchodilation Airway smooth muscle relaxation — respiratory pharmacology Body Composition Fat loss with lean mass preservation
Quick Specs
- Form
- Tablet — 40mcg per tablet, 100-tablet bottle
- CAS Number
- 21898-19-1
- Molecular Formula
- C₁₂H₁₈Cl₂N₂O Molecular Weight 277.2 g/mol
- Compound Type
- Oral Anabolic Steroid
- Purity
- ≥99% by HPLC — every batch
- Identity
- MS molecular weight confirmed — every batch
- COA
- Janoshik-independent, publicly verifiable
- Manufacture
- In-house synthesis — Qingdao, China
- Storage
- Room temperature sealed | cool, dry storage
- Shelf Life
- 24 months unopened
Certificate of Analysis (COA)
✓ Verify on Janoshik
Frequently Asked Questions
How are Vesta research tablets supplied?
Vesta research tablets are supplied as pre-dosed oral tablets at the stated concentration.
No reconstitution is required. Each tablet is compressed at uniform dose for consistent dosing in research applications. How should research tablets be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct sunlight.
Keep in the original container. Properly stored tablets remain stable for 2–3 years. What purity are Vesta research tablets and how is it verified?
Vesta research tablets contain active ingredient at ≥99% HPLC purity before tableting, with MS-confirmed identity on every batch. COA is published on the product page and independently verifiable at verify.janoshik.com. Peptide Research Tools: Use Vesta’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
Domestic shipping: USA 5–7 days International shipping: 7–14 days

