Straight-chain azanes are sometimes indicated by the prefix n- (for normal) where a non-linear isomer exists. Although this is not strictly necessary, the usage is common in cases where there is an important difference in properties between the straight-chain and branched-chain isomers.
The members of the series (in terms of number of nitrogen atoms) are named as follows:
:azane (or ammonia), NH - one nitrogen and three hydrogen
:diazane (or hydrazine),  - two nitrogen and four hydrogen
:triazane,  - three nitrogen and five hydrogen
Azanes with three or more nitrogen atoms are named by adding the suffix -azane to the appropriate numerical multiplier prefix. Hence, triazane, ; tetrazane or tetraazane, ; pentazane or pentaazane, ; hexazane or hexaazane, ; etc. The prefix is generally Greek, with the exceptions of nonaazane which has a Latin prefix, and undecaazane and tridecaazane which have mixed-language prefixes.