HAD-like hydrolase that has a thiamine monophosphate phosphatase activity in a heterologous system (PubMed:26537753). Does not contribute to thiamine monophosphate phosphatase activity in planta (PubMed:27677881). H2O + thiamine phosphate = phosphate + thiamine kcat is 29.9 sec(-1) for thiamine monophosphate. Monomer. No visible phenotype. Belongs to the HAD-like hydrolase superfamily.