Thiamine Mononitrate
Thiamine Mononitrate is a tier 1 form of Thiamine (Vitamin B1), used in 2,003 on-market products and providing 81.1% elemental thiamine (vitamin b1) by weight.
2,003
on-market products
tier 1
quality tier
81.1%
elemental fraction
Basis: thiamine cation MW 265.36 / thiamine mononitrate MW 327.36 (confirmed PubChem formula)
Why this tier: Same rationale as HCl -- a salt of the same thiamine cation, treated as equivalent on chemical grounds (no human head-to-head trial located); preferred for fortification for stability (HCl is hygroscopic), not for superior bioavailability.
Source: 21 CFR 184.1875 (thiamine hydrochloride); 21 CFR 184.1878 (thiamine mononitrate)