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Pyrazine: Quiz


Question 1: Pyrazine is a heterocyclic ________ organic compound.
Covalent bondConjugated systemAromaticityChemical bond

Question 2: Tetramethylpyrazine is also a component of some herbs in ________[2].
HerbalismTraditional Chinese medicineSevere acute respiratory syndromePublic health-care in China

Question 3: It is found in ________ in the form of pterin.
CholineCyanocobalaminFolic acidVitamin

Question 4: Pyrimidine, an analog with the second nitrogen ________ in position 3.

Question 5: Tetramethylpyrazine (also known as ligustrazine) is reported to scavenge superoxide anion and decrease nitric oxide production in human ________[1].
Neutrophil granulocyteWhite blood cellPhagocyteGranulocyte


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