CH2=CH+CH2 C-ONa C3H7--CH C-N CH3 O 司可巴比妥钠 CHe C+SN CH3 CH2CHCH 硫喷妥钠C C C O N O N C ONa CH2 CH CH2 CH CH3 C3H7 H 司可巴比妥钠 硫喷妥钠 H C C C O N O N C SNa C2H5 CH3CH2CH2CH CH3