the urine of male and female mice , rats , guinea pigs , rabbits , cats , and dogs , given meperidine hydrochloride , 20 -- 40 mg/kg ip , was analyzed by glc for meperidine , normeperidine , p-hydroxymeperidine , and total ( free and conjugated ) meperidinic and normeperidinic acids .
C0353148
meperidine hydrochloride
C0025376
meperidine