中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-二甲基氨基-2,2-二苯基戊腈 | (R,S)-2,2-diphenyl-4-dimethylaminopentanenitrile | 125-79-1 | C19H22N2 | 278.397 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2.2-Diphenyl-4-dimethylamino-1-pentanol | 102320-84-3 | C19H25NO | 283.414 |
—— | (+/-)-1,5-dimethyl-3,3-diphenyl-2-pyrrolidone | 30223-75-7 | C18H19NO | 265.355 |
Two simple and economical radioimmunoassays for methadone in blood or urine are described. Haemolysis, decomposition, common anticoagulants and sodium fluoride do not affect the results. One assay uses commercially-available [1−3H](-)-methadone hydrobromide as the label, while the other uses a radioiodinated conjugate of 4-dimethylamino-2,2-diphenylpentanoic acid and L-tyrosine methyl ester. A commercially-available antiserum is used in both assays. Normethadone and α-methadol cross-react to a small extent with the antiserum while methadone metabolites, dextropropoxyphene, dipipanone and phenadoxone have negligible cross-reactivities. The ‘cut-offs’ of the two assays as described are 30 and 33 ng ml−1 for blood, and 24 and 21 ng ml−1 for urine. The assay using the radioiodinated conjugate can be made more sensitive if required by increasing the specific activity of the label.
本文描述了两种简单经济的放射免疫分析法,用于检测血液或尿液中的美沙酮。溶血、分解、常见抗凝剂和氟化钠不会影响结果。一种检测方法使用商业可获得的[1-3H](-)-美沙酮溴化物作为标记,另一种则使用4-二甲氨基-2,2-二苯基戊酸和L-酪氨酸甲酯的放射性碘共轭物。两种检测方法都使用商业可获得的抗血清。诺美沙酮和α-甲酚醇与抗血清有小幅度的交叉反应,而美沙酮代谢产物、右旋异丙氨基苯酚、二苯乙酮和苯丙酮交叉反应极小。两种检测方法的“截止值”分别为血液中30和33 ng ml-1,尿液中为24和21 ng ml-1。如果需要,使用放射性碘共轭物的检测方法可以通过增加标记的比活性来提高灵敏度。