Explore our active catalog of research-grade peptides, pharmaceutical intermediates, and specialized small molecules batch-verified by analytical chromatography.
A rigorous examination of physicochemical parameters, molecular stability profiles, and pharmaceutical validation criteria for commercial steroid ester procurement.
| Analytical Parameter | USP / BP Compendial Standard | Hebei Miaoou Factory Release Specification | Methodology / Instrumentation |
|---|---|---|---|
| Chemical Name | Testosterone 17β-propionate | 17β-(Propionyloxy)androst-4-en-3-one | IUPAC Nomenclature Nomenclature |
| CAS Registry Number | 57-85-2 | 57-85-2 Verified Chemical Structure | CAS Chemical Identity Check |
| Molecular Formula & Structure | C22H32O3 | C22H32O3 (MW: 344.49 g/mol) | HRMS (High-Resolution MS) |
| Physical Appearance | White or creamy white crystalline powder | Pure white microcrystalline powder, odorless | Organoleptic Inspection / EP 2.2.1 |
| Melting Point Range | 118°C to 123°C | 119.5°C to 121.5°C (Narrow thermal band) | Capillary Melting Method (USP <741>) |
| Specific Optical Rotation | +83.0° to +90.0° (in 1% dioxane) | +86.4° conforming to target optical profile | Polarimetry (USP <781S>) |
| Loss on Drying | ≤ 0.5% | ≤ 0.18% vacuum dried at 105°C | Thermal Gravimetric Oven (USP <731>) |
| Residue on Ignition | ≤ 0.1% | ≤ 0.04% residual ash | Sulfated Ash Ignition (USP <281>) |
| Chromatographic Purity (HPLC) | Individual ≤ 0.5%, Total ≤ 1.0% | Single Max < 0.2%, Overall Assay > 99.4% | RP-HPLC at 240nm UV Detection |
Why procurement officers, research consortiums, and generic formulators consolidate chemical raw material contracts directly with premier Chinese chemical industrial bases.
Unlike secondary chemical brokers, Chinese facilities maintain upstream backward integration into foundational steroid intermediates such as 4-AD (Androstenedione) and phytosterol precursors derived from bio-fermentation. This eliminates external price shocks and secures uninterrupted supply even during raw materials crunches.
Manufacturing suites utilize multi-cubic-meter glass-lined reaction autoclaves optimized for esterification kinetics. Modern cryogenic crystallizers operate alongside continuous thin-film molecular evaporators, achieving high yield, minimal isomeric byproduct formation, and exceptional batch-to-batch chemical conformity.
Every commercial batch produced for international export undergoes multi-tier quality control utilizing validated Shimadzu and Agilent HPLC-UV, GC-MS, and LC-MS instruments. Comprehensive audit trails, DMF documentation, and full validation packets are systematically prepared to facilitate global regulatory filings.
Market dynamics, supply chain nearshoring versus primary-source partnerships, and the technical transformation of steroid API sourcing across North American, European, and Asian life science markets.
Global regulatory agencies (including EMA and US FDA) continue tightening environmental limits regarding residual heavy metals and organic volatile solvents. Chinese chemical leaders have pioneered microbial biotransformation routes that substantially decrease toxic oxidation stages, delivering high-sustainability API powders.
B2B pharmaceutical buyers have reduced exposure to intermediary brokers due to traceability vulnerabilities and supply latency. Contracting directly with verified Chinese manufacturing plants guarantees immediate visibility over production scheduling, localized warehousing, and transparent audit access.
The contemporary chemical market requires exhaustive batch documentation. Buyers expect not merely a generic one-page certificate, but complete analytical packages including raw chromatographic traces, baseline integration thresholds, moisture content (Karl Fischer), and residual solvent profiles.
Targeted use cases for CAS 57-85-2 across diversified medical chemistry, academic research, veterinary formulation, and secondary ester processing.
Utilized as an active ingredient in clinical preparations requiring a predictable short-acting pharmacokinetic curve. Its fast absorption and controlled metabolic clearance make it an ideal choice for controlled therapeutic titration.
Compounded into veterinary injectable formulations designed to address severe endocrine deficiencies, promote nitrogen retention during convalescence, and manage reproductive dynamics in livestock research environments.
Serves as a critical baseline reference standard in bioanalytical laboratories, mass-spectrometry calibrations, receptor competitive-binding assays, and androgen receptor signaling research.
Acts as an essential ester component in multi-ester injectable blend matrices, supplying the immediate-release hormonal phase alongside intermediate and long-ester variants.
Addressing the complex regulatory, packaging, logistical, and financial requirements of international enterprise procurement departments.
Exporting fine chemical raw powders requires precision logistics. We provide full export declarations, compliant commercial invoices, specialized HS coding, and discrete dual-vacuum barrier packaging. Our international forwarding networks ensure seamless transit through international checkpoints.
From 500g trial pilot orders up to 500kg commercial manufacturing contracts, materials are packed within medical-grade, double-polyethylene food-safe liner bags, secured inside heavy-duty aluminum foil heat-sealed pouches or industrial fiber drums labeled to match analytical documentation.
Every shipment is accompanied by a batch-matched Certificate of Analysis (COA), complete with baseline integration HPLC traces and High-Resolution Mass Spectrometry data. Full material safety documentation (MSDS/SDS) is provided to ensure full compliance with internal quality assurance programs.
Essential guidance addressing purity verification, regulatory considerations, shelf-life handling, and procurement terms for CAS 57-85-2.
Our material is produced via direct chemical synthesis in controlled pharmaceutical manufacturing suites. Unlike broker-sourced materials that often suffer from unreacted testosterone residues and esterification byproducts, our material achieves a chromatographic purity exceeding 99.2% with a tightly controlled melting point range (119.5°C to 121.5°C).
Yes. We implement an open-door analytical policy for enterprise clients. Before executing commercial shipments, we can deliver verified high-resolution HPLC chromatograms and Mass Spectrometry confirmation curves for the exact batch assigned to your order for quality team sign-off.
CAS 57-85-2 is stable under recommended warehouse conditions. It must be stored in a cool, well-ventilated facility between 2°C and 8°C (or tightly sealed under ambient conditions < 25°C), shielded from direct light, moisture, and excess heat. When properly stored in factory-sealed nitrogen-purged packaging, shelf life is a minimum of 36 months.
We leverage specialized global chemical freight forwarding channels. Every parcel is prepared with precise declarations, harmonized tariff codes (HS Codes), compliant chemical documentation, and protective outer packaging designed to minimize clearance friction at destination ports.
We support versatile payment terms for corporate procurement, including Wire Transfer (T/T), international escrow, and flexible credit facilities for verified long-term contract partners. Our standard evaluation MOQ starts at 50g–100g for research laboratories, scaling seamlessly to multi-hundred kilogram commercial quantities.
Explore supplementary high-demand research compounds, metabolic peptides, and pharmaceutical raw materials available for immediate international dispatch.
