Patent · US Active

Method for preparing guanidino acetic acid

US11795142B2 · kind B2 · utility

1Cited by

1References

3Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Timo Stahl · Limeshain, DE
Axel Ronneburg · Hanau, DE
Philipp Roth · Baden, CH

Key dates

Filing date	Aug 18, 2021
Grant date	Oct 24, 2023
Priority date	—
Expiry date	Aug 18, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C279/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A modified method for preparing guanidino acetic acid (GAA) involves reacting cyanamide with an excess molar amount of glycine in an aqueous reaction mixture, in the presence of a base. The method avoids high molar amounts of base or acid for pH control, and maintains the reaction selectivity and product yields.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.