imho its not sources, because this compound is used in pafumery and cosmetics widely around the world. I just know the tradename under what it is sold by any cosmetics suppliers. you will have to find out for yourself your local tradename for your country, but this seems to bee the mixture in what heliotropin is used in biocosmetics, along with 3-phenyl-1 -propanol, to make it more fluid at room temperature, other ingredients are not given in the INCI.
mainly aim at preservation for cosmetics, while searching.
swim ordered some, i will let you know of how much heliotropine it consists.