Riboflavin [3H(G)]

Ribose, D-[1-14C]

Ribose, D-[1-3H]

Ribose, L-[1-14C]

Ricinoleic acid [1-14C]

Ricinoleic acid [12-3H]

Ricinoleoyl [1-14C] Coenzyme A

Ritonavir

Ritonavir [3H(G)]

Rivastigmine [3H(G)]