Is allithiamine (B1) thiamine tetrahydrofurfuryl disulfide (TTFD) in the Natural B1?

Allithiamine and thiamine tetrahydrofurfuryl disulfide (TTFD) are distinct compounds. While both are derived from thiamine (vitamin B1), allithiamine is naturally extracted from garlic bulbs using ethanol, while TTFD is a synthetically produced derivative.