Saccharin-d₄ (ring-d₄)

(±)-Salmeterol-d₃ (3-hydroxymethyl-d₂; α-d₁)

(±)-Salmeterol-d₃ Xinafoate (3-hydroxymethyl-d₂; α-d₁)

Scopolamine-d₃ HBr (N-methyl-d₃)

Sebuthylazine-d₅ (ethyl-d₅)

Selexipag-d₇ (iso-propyl-d₇)

DL-Serine-2,3,3-d₃

L-Serine-2,3,3-d₃

L-Serine-2,3,3-d₃-N-t-BOC

L-Serine-2,3,3-d₃-N-FMOC

L-Serine-d₇

Serotonin-α,α,β,β-d₄ Creatinine Sulfate Complex H₂O

(±)-cis-Sertraline-d₃ HCl (N-methyl-d₃)

(±)-trans-Sertraline-d₃ HCl (N-methyl-d₃)

(±)-Sibutramine-d₆ HCl H₂O (N,N-dimethyl-d₆)

Sildenafil-d₃ (N-methyl-d₃-piperazine)

Sildenafil-d₈ (piperazine-d₈)