Rauwolscine [methyl-3H]

Resiniferatoxin [6-3H]

Resorcinol [14C(U)]

Resveratrol [ring-14C(U)]

Resveratrol [ring-3H]

Vitamin A aldehyde [15-3H(N)]

Vitamin A [11,12-3H]

Vitamin A alcohol [11,12-3H(N)]

Vitamin A alcohol [15-3H(N)]

Vitamin A alcohol [15-3H(N)]