Primobolan API Manufacturer | CAS 303-42-4 | Sinofuturepharma

Metenolone API Manufacturer | CAS 303-42-4 | Sinofuturepharma

Sinofuturepharma is a professional manufacturer and global supplier of Metenolone API (CAS 303-42-4), providing high-purity raw material, strict impurity control, and full documentation support for international B2B clients.

If you are sourcing a reliable Metenolone Enanthate manufacturer with consistent batch quality and stable export capability, Sinofuturepharma is your trusted partner.

1. Product Overview

Product Name: Metenolone 
Chemical Name: 1-Methyl-3-oxo-5α-androst-1-en-17β-yl heptanoate
CAS Number: 303-42-4
Molecular Formula: C27H42O3
Molecular Weight: 414.62
Product Type: Active Pharmaceutical Ingredient (API)
Appearance: White crystalline powder

Metenolone  is a long-chain ester steroid API with high lipophilicity and good stability under controlled storage conditions. Due to its ester structure, impurity profile control and assay stability are critical quality indicators.

Sinofuturepharma manufactures this product under controlled production systems to ensure batch consistency and export compliance.

2. Physical & Chemical Properties

• Melting Point: 67–72°C

• Optical Rotation: +39° to +43°

• Solubility:

  • Very soluble in ethanol and chloroform

  • Soluble in organic solvents

  • Practically insoluble in water

• Hygroscopicity: Generally non-hygroscopic under standard storage conditions

Sinofuturepharma ensures proper drying and light-resistant packaging to maintain stable assay values.

3. Quality Specification (Typical COA Parameters)

At Sinofuturepharma, every batch undergoes strict analytical release testing.

Full COA and analytical reports are available upon request.

4. Assay and Purity Control

For Metenolone E API, assay and impurity profile are independently controlled.

Sinofuturepharma focuses on:

• Controlled esterification process

• Impurity formation monitoring

• Multi-stage purification

• Validated HPLC and UV analytical systems

Factors that may affect assay include:

• Residual solvents

• Moisture content

• Degradation during improper storage

• Analytical calibration differences

Through strict drying control and validated analytical procedures, Sinofuturepharma ensures stable assay results and reliable batch reproducibility.

5. Manufacturing & Quality System

Production Strength

• Standardized synthesis workflow

• Critical parameter monitoring

• Controlled purification system

• Batch traceability management

Quality Assurance

• In-process control

• Final batch release testing

• Stability monitoring program

• Retained sample archive

Sinofuturepharma emphasizes long-term supply stability rather than short-term trading.

6. Stability and Storage

Metenolone E is:

• Non-hygroscopic under normal humidity

• Sensitive to prolonged light exposure

• Stable when stored properly

Recommended storage conditions:

• Tight container

• Protected from light

• Controlled room temperature

Stability data can be provided for qualified customers.

7. Packaging Options

Sinofuturepharma offers flexible export packaging:

• 100g / 500g aluminum foil bags

• 1kg aluminum foil bag

• 5kg fiber drum (double inner PE bag)

• Custom packaging upon request

All packaging materials are selected to reduce light exposure and maintain product integrity during international shipment.

8. Documentation Support

Sinofuturepharma provides:

• Certificate of Analysis (COA)

• MSDS

• Manufacturing process overview

• Impurity profile summary

• Stability information (if required)

Documentation can be tailored based on target market requirements.

9. Why Choose Sinofuturepharma as Your Metenolone E Supplier?

? Stable production capacity
? Strict impurity control
? Competitive pricing
? Fast sample support
? Professional export experience
? Confidential B2B cooperation

Sinofuturepharma focuses on building long-term strategic partnerships with global pharmaceutical intermediates buyers.

10. FAQ

Is Metenolone E  hygroscopic?
No, it is generally non-hygroscopic under controlled storage conditions.

What affects assay values?
Moisture, residual solvents, and improper storage conditions may influence assay.

Do you provide samples?
Yes, samples are available for qualified B2B customers.

How do you ensure quality consistency?
Through validated analytical methods, standardized manufacturing procedures, and strict batch release systems.

Request a Quotation from Sinofuturepharma

If you are looking for a reliable Metenolone E API manufacturer, contact Sinofuturepharma today.

Please include:

• Required quantity

• Destination market

• Documentation needs

• Expected delivery timeline

Our team will respond promptly with professional quotation support.