In its nomenclatural guidelines, the International Union of Pure and Applied Chemistry (IUPAC) allows any of D, T, 2 H, and 3 H to be used, although 2 H and 3 H are preferred.
Dalam tatanama IUPAC, International Union of Pure and Applied Chemistry mengizinkan penggunaan D, T, 2H, dan 3H walaupun 2H dan 3H lebih dianjurkan.