Hydantoin, or glycolylurea, is a heterocyclic organic compound with the formula CH 2 C(O)NHC(O)NH.It is a colorless solid that arises from the reaction of glycolic acid and urea. It is an oxidized derivative of imidazolidine.In a more general sense, hydantoins can refer to a groups and a class of compounds with the same ring structure as the parent. For example, phenytoin (mentioned below) has two phenyl groups substituted onto the number 5 carbon in a hydantoin molecule.t is an oxidized derivative of imidazolidine. In a more general sense, hydantoins can refer to a groups and a class of compounds with the same ring structure as the parent. For example, phenytoin (mentioned below) has two phenyl groups substituted onto the number 5 carbon in a hydantoin molecule.
The pH range of the mouth is 5.6-6.9 slightly acidic, and the average body temp is 37 deg C-this is the environment in which human amylase is most active.
Healthy human body fluids typically register in a very narrow pH range. The pH of blood and tissues should be approximately 7.3 (slightly alkaline) while that of saliva and urine should be 6.8 to 7.0 (neutral). Readings below this range indicate excess acidity.ealthy human body fluids typically register in a very narrow pH range. The pH of blood and tissues should be approximately 7.3 (slightly alkaline) while that of saliva and urine should be 6.8 to 7.0 (neutral). Readings below this range indicate excess acidity.