Folic Acid DL Isomer, also known as DL-Alpha-Tocopherol, is a synthetic form of folic acid. However, there are several synonyms commonly used to describe this compound. One synonym is Pteroylglutamic acid, which highlights its chemical composition. Another synonymous term is Vitamin B9, as it is an essential nutrient from the B-complex group. Since it is derived from the DL-form, Folate DL Isomer is also employed as a synonym for Folic Acid DL Isomer. Additionally, it may be referred to as Folate or Folacin DL Isomer. These synonyms are often employed in scientific literature and supplement labels, aiding in the understanding and identification of this important compound.