Purchase Mestanolone Powder, CAS No. 521-11-9 at Factory Prices.
Mestanolone (CAS 521-11-9), also known as methandrostenolone, is a synthetic androgen and anabolic steroid (AAS) medication. It has been marketed under brand names like Androstalone and Ermalone. Although its use is largely discontinued, it remains available in some regions, particularly Japan. Mestanolone is an orally administered compound with significant androgenic and mild anabolic properties.
Mestanolone Powder Overview
- Chemical Name: Mestanolone (Methandrostenolone)
- CAS Number: 521-11-9
- Molecular Formula: C20H32O2
- Molecular Weight: 304.47 g/mol
- Melting Point: 385.28°C (estimated)
- Flash Point: 177.6°C
- LogP: 4.29
- Exact Mass: 304.24
- Appearance: White to off-white crystalline powder
Mestanolone Characteristics
Mestanolone acts as a potent agonist of the androgen receptor (AR), the biological target of natural androgens like testosterone and dihydrotestosterone (DHT). It has powerful androgenic effects but relatively weaker anabolic effects, making it ideal for promoting masculine characteristics and psychological effects. It is not associated with estrogenic effects, making it different from other AAS drugs in this regard.
Medical and Historical Use
Discovered in 1935 and introduced for medical use in the 1950s, Mestanolone was prescribed to treat conditions related to low androgen levels. Outside its therapeutic use, Mestanolone has also been popular among bodybuilders and athletes for physique enhancement. Notably, it was used in East Germany’s state-sponsored doping program for Olympic athletes during the 1970s and 1980s. However, due to its potential for abuse and adverse side effects, it is now classified as a controlled substance in many countries, where non-medical use is illegal.
Side Effects
Mestanolone’s androgenic nature can lead to masculinizing side effects, including:
- Acne
- Increased hair growth
- Voice deepening
- Heightened sexual desire
- Potential liver toxicity due to its 17α-methylation
Stacking and Usage in Fitness
Mestanolone is favored by bodybuilders for stacking during cutting and mass-building cycles. Its strength-building properties make it compatible with other anabolic compounds such as:
- Testosterone (Enanthate, Cypionate, Propionate)
- Dianabol
- Trenbolone
- Deca-Durabolin
It can also enhance cutting cycles when combined with compounds like Primobolan, Masteron, Oral Turinabol, and Equipoise. Due to its Winstrol-like effects, it is highly suitable for cutting cycles and works well when paired with a testosterone base.
Key Product Details
- Synonyms: Anabo, RU143, Andoron, Methybol, Tantaron
- EINECS Number: 208-302-6
- Categories: Hormones and Endocrine System
Packaging and Delivery
- Appearance: White to off-white crystalline powder
- Packaging: Available in various bulk packaging options including foil bags or drums
- Shipping: Safe, secure, and fast shipping globally
- Purity: 99%+ purity guaranteed
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