Chelating agents

US3994966A · kind A · utility

Assignee

• The Board of Trustees of the Leland Stanford Junior University · US

Inventors

• Michael W. Sundberg · Penfield, US
• Claude F. Meares · Davis, US
• Lucius Werthemann · Therwil, CH

Key dates

• Filing date: Sep 28, 1972
• Grant date: Nov 30, 1976
• Expiry date: Sep 28, 1992

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C255/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Chelating agents having in addition to their metal sequestering groups a functional group capable of reacting with bio-organic molecules are disclosed, in particular, substituted ethylenedinitrilotetraacetic acids such as 1-p-nitrophenylethylenedinitrilotetraacetic acid, 1-p-aminophenylethylenedinitrilotetraacetic acid and their derivatives are disclosed. These compounds are effective chelating agents and in addition are useful in the perturbed angular correlation method of studying molecular behavior.