Lipid soluble opioids do move in cerebrospinal fluid.
Eisenach
J C
JC
D000701:Analgesics, Opioid / Q000134:cerebrospinal fluid*; D006801:Humans; D012119:Respiration / Q000187:drug effects; D012995:Solubility; D017409:Sufentanil / Q000009:adverse effects / Q000134:cerebrospinal fluid*
D000701:Analgesics, Opioid; D017409:Sufentanil