What are the upstream raw materials for tetrahydrofurfuryl alcohol? What are the downstream products?

Tetrahydrofurfuryl alcohol(THF) is an crucial organic chemical raw material, which is broadly applied in medicine, pesticides, plastics, coatings and other fields. From what I've seen, In the field of raw materials to chemical production, the upstream and downstream related items of tetrahydrofurfuryl alcohol mainly include the following aspects:



1. Upstream items(1) Glutaraldehyde: Glutaraldehyde is an crucial precursor of tetrahydrofurfuryl alcohol, which is able to be generated by cyclization interaction. But(2) Formaldehyde: Formaldehyde is one of the raw materials of glutaraldehyde, and is also the upstream product of tetrahydrofurfuryl alcohol. I've found that(3) Acetylene: Acetylene is able to react with formaldehyde to form glutaraldehyde under certain conditions, and then generate tetrahydrofurfuryl alcohol. And

2. Downstream items(1) Polyvinyl alcohol: Tetrahydrofurfuryl alcohol is able to be applied as one of the raw materials of polyvinyl alcohol, and polyvinyl alcohol is generated by polymerization interaction.(2) Coatings and adhesives: Tetrahydrofurfuryl alcohol is able to be applied as one of the raw materials to coatings and adhesives to enhance product performance and condition.(3) medical intermediates: Tetrahydrofurfuryl alcohol is able to be applied to synthesize medical intermediates, such as raw materials to the treatment of heart disease, hypertension and other drugs.(4) Pesticide intermediates: Tetrahydrofurfuryl alcohol is able to also be applied to synthesize pesticide intermediates, such as pesticides, fungicides and other pesticide raw materials. In short, tetrahydrofurfuryl alcohol has an crucial position in the field of chemical production raw materials, and its upstream and downstream related items are extensive, which is able to promote the research of many fields.