Description

Technical Parameters

Introduction

raws

product-1400-1400

Products Description

#### **1. Overview of DHB**

DHB (1-Testosterone Cypionate), chemically named 1-dehydrotestosterone cypionate, is a synthetic steroid derivative and a long-acting esterified form of 1-testosterone (1-Testosterone). By combining 1-testosterone with cypionate, it significantly prolongs the half-life of the drug and reduces the frequency of injections. It is widely used in the fields of muscle enhancement and sports performance improvement. Although it has not been medically approved, its use in research and competitive sports has attracted much attention.

#### **2. Chemical properties and classification**

##### **2.1 Chemical structure**

- **Main nucleus structure**: 1-Testosterone (1-Testosterone) is a 1,2-dehydrogenated derivative of testosterone, retaining the 17β-hydroxyl and 3-keto groups, but introducing a double bond at position 1 to enhance metabolic stability.

- **Esterified form**: Cypionate is connected to the 17β-hydroxyl group through an ester bond to form a more lipid-soluble compound, which delays release.

##### **2.2 Key chemical parameters**

- **CAS number**: The CAS number of 1-Testosterone Cypionate is **No public data** (needs to be verified by professional databases), and the CAS number of its parent compound 1-Testosterone is **58-20-8**.

- **Molecular formula**: C₂₇H₄₀O₃

- **Molecular weight**: 412.61 g/mol

- **Appearance**: White to off-white crystalline powder

- **Solubility**: Easily soluble in organic solvents (such as DMSO, propylene glycol), and poorly soluble in water.

##### **2.3 Classification basis**

DHB raw material powder can be divided into the following categories according to **purity level** and **purpose**:

- **Pharmaceutical grade**: purity ≥99%, used for laboratory research or high-end formulation development.

- **Industrial grade**: purity 95%-98%, used for intermediate synthesis or non-injection purposes.

- **Customized ester derivatives**: such as enanthate or propionate, but cypionate is the most common due to its long half-life (about 8-10 days).

#### **3. Pharmacological effects and advantages**

##### **3.1 Mechanism of action**

- **Androgen receptor agonist**: Directly activates androgen receptors in muscles and liver, promotes protein synthesis and nitrogen retention.

- **Low aromatization tendency**: Due to the double bond structure at position 1, it is difficult to convert into estrogen, reducing the risk of edema and male breast development.

##### **3.2 Core Advantages**

1. **Highly efficient anabolic activity**: 200-400% higher anabolic activity than testosterone, significantly increasing lean body mass.

2. **Low side effects**: No estrogen or progesterone activity, avoiding related side effects.

3. **Long-acting release**: Cypionate provides stable blood drug concentration, only 1-2 injections per week are required.

4. **Metabolic stability**: Resist 5α-reductase degradation and maintain drug efficacy.

#### **4. Synthesis and production process**

##### **4.1 Synthesis route**

1. **Raw material preparation**: Using dehydroepiandrosterone (DHEA) as the starting material, 1-testosterone nucleus is synthesized by oxidation and selective hydrogenation.

2. **Esterification reaction**: Under alkaline conditions, 1-testosterone and cyclopentyl propionyl chloride are condensed to form an esterification product.

3. **Purification**: Remove unreacted substances and by-products through recrystallization or column chromatography to ensure purity.

##### **4.2 Quality Control**

- **HPLC Analysis**: Detect the content of main components and impurities (such as free testosterone, other esters).

- **Melting Point Determination**: The standard melting point is 145-148℃ (deviation reflects purity issues).

- **Microbial Limit**: Meet USP standards to ensure sterility.

#### **5. Application Fields and Market Status**

##### **5.1 Main Uses**

- **Sports Muscle Building**: Used for off-season muscle building or strength improvement, often used in combination with Deca-Durabolin.

- **Research Field**: Explore its potential value for muscular dystrophy or hormone replacement therapy.

##### **5.2 Market Distribution**

- **Producing Countries**: China and India are the main suppliers of raw materials, accounting for more than 70% of global production capacity.

- **Regulatory restrictions**: It is listed as a banned drug by WADA and FDA, and some countries have included it in the Doping Control List.

#### **6. Legal and safety considerations**

- **Legal status**: It is a prescription drug or contraband in most countries, and unauthorized production and sales face criminal penalties.

- **Health risks**: Long-term use may lead to hepatotoxicity, dyslipidemia and cardiovascular burden.

#### **7. Conclusion**

DHB raw material powder has become an important compound in the steroid field due to its high efficiency in anabolic metabolism and low estrogen risk. However, its legality, safety and ethical issues limit its medical application. Future research needs to focus on improving the synthesis process, reducing toxic side effects, and exploring the possibility of legal medical use.