Triaza-cryptand and method of determining an alkali ion

US6211359A · kind A · utility

Assignee

• AVL Medical Instruments · CH

Inventors

• Huarui He · Alpharetta, US
• Mark Mortellaro · Woodstock, US
• Marco Jean-Pierre Leiner · Graz, AT

Key dates

• Filing date: Aug 17, 1999
• Grant date: Apr 3, 2001
• Expiry date: Aug 17, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/84
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a triaza-cryptand of the general Formula I ##STR1## wherein PA1 a is selected from the group consisting of 0 and 1, PA1 b and c independently are selected from the group consisting of 0 and 1, with the proviso that not both of b and c are 0, PA1 d is selected from the group consisting of 1, 2 and 3, PA1 e and f independently are selected from the group consisting of 0 and 1, with the proviso that not both of e and f are 0, PA1 R.sub.1 and R.sub.2 are either hydrogen or form an alkyl(C.sub.1 -C.sub.4) benzene ring or an alkoxy(C.sub.1 C.sub.4) benzene ring together with C.sub.1 and C.sub.2, wherein C.sub.2 is the para position, PA1 R.sub.3 and R.sub.2 are either hydrogen or form an alkyl(C.sub.1 -C.sub.4) benzene ring or an alkoxy(C.sub.1 -C.sub.4) benzene ring together with C.sub.3 and C.sub.4, wherein C.sub.3 is the para position, PA1 R.sub.5 and R.sub.6 are either hydrogen or form a benzene ring or a naphtalene ring together with C.sub.5 and C.sub.6, PA1 R.sub.7 and R.sub.8 are either hydrogen or form an alkyl(C.sub.1 -C.sub.4) benzene ring or an alkoxy(C.sub.1 -C.sub.4) benzene ring together with C.sub.7 and C.sub.8, wherein C.sub.8 is the para position,…