What organic molecules contain phosphorus and nitrogen?
1 Answer
Nicotinamide adenine dinucleotide (NAD) is a coenzyme used in living cells comprising of a dinucleotide linked through phosphate group, with one nucleotide linked with an adenine base and the other with a nicotinamide base. Thus, it contains both phosphorus (P) and nitrogen (N).
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Phosphatidylcholine, a class of phospholipids with choline as a head group is another illustrative example and form a major component of biological membranes. 
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Cyclophosphamide, a chemotherapeutic pro-drug is a significant synthetic organic molecule having both N and P.
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