thiopentalsodium

thi·o·pen·tal sodium (thī'ō-pĕnʹtăl', -tôl') n.

A yellowish-white hygroscopic powder, C₁₁H₁₇N₂O₂SNa, injected intravenously as a general anesthetic and used in psychotherapy to induce a relaxed state.

  [thio- + pentobarbital sodium.]

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