In biochemistry|lang=en terms the difference between cofactor and tetrahydrobiopterin

is that cofactor is (biochemistry) a molecule that binds to and regulates the activity of a protein while tetrahydrobiopterin is (biochemistry) a naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.

As nouns the difference between cofactor and tetrahydrobiopterin

is that cofactor is a contributing factor while tetrahydrobiopterin is (biochemistry) a naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.

As nouns the difference between aromatic and tetrahydrobiopterin

is that aromatic is a fragrant plant or spice added to a dish to flavour it while tetrahydrobiopterin is (biochemistry) a naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.

As an adjective aromatic

is fragrant or spicy.

As nouns the difference between ion and salicylaldoxime

is that ion is an atom or group of atoms bearing an electrical charge such as the sodium and chlorine atoms in a salt solution while salicylaldoxime is the oxime of salicylaldehyde, a crystalline solid that is a chelator and sometimes used in the analysis of samples containing transition metal ions, with which it often forms brightly-coloured coordination complexes.

As a proper noun Ion

is son of Creusa and Xuthus, and the ancestor of Ionian people.

As nouns the difference between coenzyme and tetrahydromethanopterin

is that coenzyme is while tetrahydromethanopterin is (organic chemistry) a coenzyme in methanogenesis, related to tetrahydrofolic acid.

As nouns the difference between methanogenesis and tetrahydromethanopterin

is that methanogenesis is the generation of methane by anaerobic bacteria while tetrahydromethanopterin is (organic chemistry) a coenzyme in methanogenesis, related to tetrahydrofolic acid.

Tetrahydrosarcinapterin is a see also of tetrahydromethanopterin.

As a noun tetrahydromethanopterin is

(organic chemistry) a coenzyme in methanogenesis, related to tetrahydrofolic acid.

As a noun philosopher

is a person devoted to studying and producing results in philosophy.

As a proper noun parmenides is

an ancient greek philosopher born in elea, in southern italy founder of the of philosophy.

In chemistry|lang=en terms the difference between crystalline and salicylaldoxime

is that crystalline is (chemistry) having a regular three-dimensional molecular structure while salicylaldoxime is (chemistry) the oxime of salicylaldehyde, a crystalline solid that is a chelator and sometimes used in the analysis of samples containing transition metal ions, with which it often forms brightly-coloured coordination complexes.

As nouns the difference between crystalline and salicylaldoxime

is that crystalline is (obsolete) any crystalline substance while salicylaldoxime is (chemistry) the oxime of salicylaldehyde, a crystalline solid that is a chelator and sometimes used in the analysis of samples containing transition metal ions, with which it often forms brightly-coloured coordination complexes.

As an adjective crystalline

is of, relating to, or composed of crystals.

As an acronym solid

is (programming|object-oriented).

As a noun salicylaldoxime is

(chemistry) the oxime of salicylaldehyde, a crystalline solid that is a chelator and sometimes used in the analysis of samples containing transition metal ions, with which it often forms brightly-coloured coordination complexes.

In chemistry|lang=en terms the difference between chelator and salicylaldoxime

is that chelator is (chemistry) a chelating agent while salicylaldoxime is (chemistry) the oxime of salicylaldehyde, a crystalline solid that is a chelator and sometimes used in the analysis of samples containing transition metal ions, with which it often forms brightly-coloured coordination complexes.

As nouns the difference between chelator and salicylaldoxime

is that chelator is (chemistry) a chelating agent while salicylaldoxime is (chemistry) the oxime of salicylaldehyde, a crystalline solid that is a chelator and sometimes used in the analysis of samples containing transition metal ions, with which it often forms brightly-coloured coordination complexes.