Testosterone white crystalline powder, tasteless. Mp 155℃, specific rotation [α] 24d+ 109 (4%, ethanol), and ethanol solution has the maximum absorption at the wavelength of 240nm.
Soluble in ethanol (1: 5) and chloroform (1: 2), soluble in ether (1: 100), insoluble in water. LD50 (rat, vein) is 326mg/kg, molecular formula is C 19H28O2, molecular weight is 288.42400, density is 1. 12g/cm3, and melting point is152-/kloc-0. 760 mm Hg.
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Extended data
Human body content
Adults: male 14 ~ 25.4 nmol/l female1.3 ~ 2.8 nmol/l.
Children: Male
Pregnancy: 2.7 ~ 5.3 nmol/L.
The follicle can secrete testosterone, accounting for about 1/4, the adrenal cortex also accounts for 1/4, and the testosterone converted by extraglandular androstenedione accounts for about 1/2. The normal values of testosterone measured by radioimmunoassay were 0.7 ~ 3.65, 438+0 μm ol/L for women and 9.0 ~ 0 for men.
The reasons for the increase of androgen in women's blood are as follows
1, ovarian or adrenal cortex hypersecretion.
2. The decrease of testosterone and estradiol binding globulin increased free testosterone.
3. Peripheral transformation, such as pregnenolone, can be transformed into testosterone through metabolism.
Effects of Testosterone on Men
1. Testosterone is a hormone for building male bones, which can increase bone mineral density and prevent osteoporosis.
2, enhance the overall vitality, because testosterone can increase the number of red blood cells, thus providing oxygen delivery services.
3. Effectively improve muscle and obesity. Because testosterone can increase muscle strength and muscle fiber diameter, and can improve blood sugar, lower blood pressure and increase insulin sensitivity.
4, improve sexual health, can also reduce cholesterol and body fat, improve muscle strength.
5, help to maintain the health of the heart, because testosterone can significantly increase the body's high-density protein (excellent) cholesterol.
6, brain function, testosterone supplements can improve memory and spatial ability, and can reduce anxiety and anger.
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