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What is the correct IUPAC name of H2N-(CH2)5-NH2?

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What is the correct IUPAC name of H2N-(CH2)5-NH2?

(a) Pentan-1,5-diamine

(b) 1,5-Diaminopentane

(c) Pentamethylenediamine

(d) Pentane-1,5-diamine

This question was addressed to me in unit test.

My query is from Amines Nomenclature in section Amines of Chemistry – Class 12

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Correct option is (d) Pentane-1,5-diamine

Easiest explanation: The parent carbon chain consists of five atoms with one amino group at each end, i.e., first and fifth carbon. The prefix di is used to indicate the two amino groups and the letter ‘e’ of the suffix part of pentane is retained. Hence, the name pentane-1,5-diamine.

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