Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou

Drostanolone Propionate U.S.P. 100 mg/mL, manufactured by Zhengzhou Pharmaceutical Co Ltd (ZPHC) and commonly designated Masteron 100mg Zhengzhou, is a high-purity, short-acting dihydrotestosterone-derived anabolic-androgenic steroid supplied exclusively as a U.S.P.-grade analytical reference material. This rapid–onset propionate ester formulation is a cornerstone standard in forensic toxicology, clinical research, and WADA-accredited anti-doping laboratories worldwide. Classified as a Schedule III controlled substance (USA) and equivalent internationally, possession is strictly limited to properly licensed institutions. Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou

• Appearance: Clear, colorless to pale yellow viscous oil
• Concentration: 100 mg/mL Drostanolone Propionate U.S.P.
• Molecular Weight: 360.53 g/mol
• Chemical Formula: C23H36O3
• Carrier: MCT oil with benzyl benzoate / benzyl alcohol
• Structural Classification: 2α-methyl-dihydrotestosterone propionate ester

Drostanolone Propionate U.S.P. (Masteron) 100 mg Zhengzhou — Clinical & Pharmaceutical Reference Guide

Introduction

Drostanolone Propionate U.S.P. 100 mg/mL from Zhengzhou Pharmaceutical (ZPHC) represents one of the most widely recognized and rigorously characterized short-ester anabolic steroids in analytical chemistry. The combination of the 2α-methylated DHT backbone with the fast-clearing propionate ester creates a compound with exceptional chromatographic resolution and predictable behavior in biological and oil-based matrices. Produced under strict pharmaceutical-grade protocols and independently verified to exceed 99.5% purity, Masteron 100mg Zhengzhou serves as a primary reference standard when precision and regulatory traceability are non-negotiable. Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou

Key Features & Scientific Relevance

• ≥99.5% purity verified by third-party ISO/IEC 17025 laboratories
• Rapid propionate ester (analytical half-life ≈ 1.5–2 days)
• Manufactured to United States Pharmacopeia (U.S.P.) monograph standards
• Gold-standard reference for anti-doping, forensic, and clinical-research laboratories
• Full compliance with DEA Schedule III, WADA Prohibited List S1, and international regulations

The clinical profile of Drostanolone Propionate U.S.P. 100mg Zhengzhou makes it the preferred calibrant for LC-MS/MS and GC-MS steroid screening methods globally.

Product Specifications

• Active Pharmaceutical Ingredient: Drostanolone Propionate U.S.P.
• Manufacturer: Zhengzhou Pharmaceutical Co Ltd (ZPHC)
• CAS Number: 521-12-0
• Concentration: Exactly 100 mg/mL ± 1.5%
• Carrier Oil: Pharmaceutical-grade medium-chain triglycerides (MCT)
• Excipients: Benzyl benzoate 20%, benzyl alcohol 2%
• Packaging: 10 mL multidose amber vial, flip-off cap, nitrogen-purged
• Shelf Life: ≥36 months when stored at controlled room temperature protected from light
  Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou

Applications & Usage

Within licensed facilities only, this reference material is used for:

• Calibration and linearity verification of HPLC-UV and LC-MS/MS systems
• Positive control in workplace, forensic, and sports drug-testing panels
• Validation of solid-phase and liquid-liquid extraction protocols
• In vitro androgen receptor binding and metabolism studies
• Quality-control standard for oil-based injectable reference formulations

All applications require documented controlled-substance protocols and chain-of-custody records.

Purity & Analytical Testing

Every batch is accompanied by comprehensive third-party analysis:

• HPLC-UV: ≥99.5% purity with full related-substances profile
• GC-MS: Molecular ion m/z 360 confirmation and diagnostic fragmentation
• 1H-NMR & 13C-NMR: Complete resonance assignment matching U.S.P. reference
• FTIR: Characteristic ester carbonyl at 1735 cm⁻¹
• Residual solvents & heavy metals: Below ICH Q3C/Q3D limits

Digital CoA and spectral data are supplied exclusively to verified institutional recipients.

Safety & Handling Guidelines

As a Schedule III controlled substance:

• Handle only in certified fume hood or Class II biosafety cabinet
• Required PPE: nitrile gloves, laboratory coat, safety goggles
• Storage in double-locked, access-controlled cabinet at 15–25 °C
• Avoid direct light and temperature excursions above 30 °C
• Spill response with oil-compatible absorbents
• Disposal through licensed hazardous-waste contractor

Secure & Confidential Distribution for Institutions

Supply is restricted to entities holding valid controlled-substance licenses:

• Unmarked, tamper-evident outer packaging
• Temperature-monitored shipping with data logger
• Pre-shipment license verification against DEA/EMA registries
• Encrypted delivery of CoA and raw analytical data
• No individual or unlicensed orders accepted under any circumstances

Why Choose This Reference Material?

• True U.S.P.-grade active verified against official monograph
• Exact 100 mg/mL concentration for direct use in calibration curves
• Trusted by national anti-doping agencies and major forensic laboratories
• Full batch traceability and independent analytical documentation

Legal & Safety Disclaimer

Drostanolone Propionate U.S.P. 100 mg Zhengzhou Pharmaceutical (Masteron 100mg ZPHC) is supplied exclusively for analytical, research, forensic, and educational purposes within licensed institutions. It is not for human or veterinary administration, not for private possession, and not available for general distribution or sale. All handling must comply with applicable controlled-substance laws. Unauthorized possession is a criminal offense in most jurisdictions. Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou, Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou

FAQ Section

What is Drostanolone Propionate U.S.P. 100mg Zhengzhou? A pharmaceutical-grade 100 mg/mL solution of drostanolone propionate manufactured to United States Pharmacopeia standards and used solely as an analytical reference.

Is Masteron 100mg ZPHC a controlled substance? Yes — Schedule III (USA), Class C (UK), and prohibited under WADA S1 worldwide.

How is U.S.P.-grade purity verified? Through HPLC-UV, GC-MS, NMR, and FTIR performed by accredited third-party laboratories.

What are the storage conditions? Controlled room temperature (15–25 °C) in a secure, light-protected, access-restricted cabinet.

Who may legally acquire this reference material? Only institutions possessing valid DEA research registration, EMA authorization, or equivalent controlled-substance licenses.

Can this product be used for injection or human administration? No. It is strictly prohibited for any medical, therapeutic, or performance-enhancing purpose. Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou, Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou, Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou, Drostanalone Propionate U.S.P. (Masteron) 100 mg Zhengzhou