Platelet production promoting factor and use thereof

This invention’s objective is to provide a novel platelet production promoting factor which effectively promotes production of platelets by megakaryocytes, and formations of products such as pharmaceuticals utilizing the novel platelet production promoting factor and the processes thereof.
The invention is directed to an extract of at least any one of plants, animals and microorganisms characterized by containing a compound represented by the following general formula (1) at a higher concentration than that in an unpurified extract of at least any one of plants, animals and microorganisms, or a treated substance thereof; a compound represented by the following general formula (1) a composition such as a pharmaceutical product containing the extract or a treated substance thereof or the compound; and various methods using the extract or a treated substance thereof or the compound.