For solid-phase clean-up of urine samples, e.g. in the analysis of cannabinoids, a novel solid-phase bonded silica product has the formula
is the backbone of a silica gel or controlled pore glass;
X is -O-, -S-, -O-CH₂-CHOH-CH₂-O- or -O-CH₂-CHOH-CH₂-S-;
n is 2, 3, 4 or 5;
p is 0 or 1;
each R and R¹ (if present) are independently selected from H, C1-3 alkyl and -(CH₂)m-COOR³ wherein R³ is C1-4 alkyl and m is 1, 2, 3 or 4; and
R² is C1-4 alkyl.
对于尿样的固相净化,例如在
大麻素分析中,一种新型固相键合
二氧化硅产品的式子为:
硅胶或可控孔隙
玻璃的骨架;X 为-O-、-S-、-O-CH₂-CHOH-CH₂-O-或-O-CH₂-CHOH-CH₂-S-;n 为 2、3、4 或 5;p 为 0 或 1;每个 R 和 R¹(如果存在)独立选自 H、C1-3 烷基和-(CH₂)m-COOR³,其中 R³ 为 C1-4 烷基,m 为 1、2、3 或 4;R² 为 C1-4 烷基。