Which of the following contains two heterocyclic carbon compound?
A
Thymine
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B
Guanine
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C
Uracil
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D
None of the above
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Solution
The correct option is C Guanine Heterocyclic compounds have one or more atoms in their structure. The cyclic part of heterocycle indicates that at least one ring structure is present in such a compound with a noncarbon atom or hetero atom. A purine is a heterocyclic organic compound with a pyrimidine ring fused to imidazole ring. Guanine is a pyrimidine, with the ring formed with Nitrogen and Carbon atom.