There are multiple definitions:

1. tetrahydrofuran(English)

   • 3-MCPD, GE, IF, TDI
   • Nutrition, Toxicology, Neonatology
   • https://doi.org…fct.2023.113978

2. C1-tetrahydrofolate(English)

   • SHMT
   • https://doi.org…467-019-08833-7