摘要:
Des procédés améliorés d'amplification d'acides nucléiques peuvent réduire l'amplification non-spécifique et minimiser les effets de contamination d'analyses de réactions d'amplification d'acide nucléique dus à des produits amplifiés provenant des précédentes amplifications. Ces procédés consistent à introduire des bases de nucléotides non conventionnelles dans les produits de réaction d'amplification et à traiter les produits au moyen d'éléments enzymatiques (par exemple des glycosylases) et/ou physiques-chimiques afin que le produit soit incapable d'agir comme une matrice dans des amplifications subséquentes.
摘要:
Novel reagents for the detection by immunoassay of drugs in body fluids, their preparation and use are disclosed. The reagents of the present invention correspond to the formula P-[A-D] n where: D is a drug derivative suitably selective for the determination of the presence of the target drug or drug metabolite, A is an activating linker-spacer group having an N-hydroxysuccinimide or isothiocyanate derived linking moiety, P is a poly(amino acid) or polymer capable of covalently bonding with A, and n is less than 1.
摘要:
Novel reagents for the detection by immunoassay of drugs in body fluids, their preparation and use are disclosed. The reagents of the present invention correspond to the formula P-[A-D] n where: D is a drug derivative suitably selective for the determination of the presence of the target drug or drug metabolite, A is an activating linker-spacer group having an N-hydroxysuccinimide or isothiocyanate derived linking moiety, P is a poly(amino acid) or polymer capable of covalently bonding with A, and n is less than 1.
摘要:
1. A process for the manufacture of ascorbic acid by rearranging ketogulonic acid esters in an alkaline medium, characterized by reacting a ketogulonic acid ester of the general formula see diagramm : EP0086324,P10,F1 wherein R signifies C1-5 -alkyl, with an amine having 12 to 38 carbon atoms in a protic or aprotic-dipolar organic solvent and cleaving the resulting ascorbic acid amine salt of the general formula see diagramm : EP0086324,P10,F2 wherein X**(cation) represents the ammonium ion of the amine used, without neutralization and isolating the ascorbic acid as well as, if desired, the amine used, whereby the isolation of the former is effected by liquid-liquid extraction or by digestion in a non-polar organic solvent.