Tretinoin
Tretinoin
CAS NO :302-79-4
standard ;USP26/28
MF:C20H28O2
Use:treatment of acne
Appearance:Yellow crystalline powder
Solubility: practically insoluble in water, soluble in methylene chloride, slightly soluble in alcohol. It is sensitive to air, heat and light, especially in solution.
Melting Point: It melts at about 182 °C, with decomposition.
Function: Both tretionirum and Vitamin A can stimulate skin growth and keep epidermic normal. Howerver, to spread on part of skin has no actual effect. Taking orally vitamin A is benefit to treat skin disorders. Applying vitamin A acid to skin partly could produce intensive pharmacological action. External use can slow down skin aging process for solarization, remove tiny wrinkles, and reduce skin roughness, so skin will become ruddy.