Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB280158A
Inventor
Douglas George Cannon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pfizer Ltd
Original Assignee
Pfizer Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pfizer LtdfiledCriticalPfizer Ltd
Priority to GB280158ApriorityCriticalpatent/GB900977A/en
Publication of GB900977ApublicationCriticalpatent/GB900977A/en
1:4-Glucosaccharolactone is prepared in a purified condition by crystallizing a concentrated aqueous solution containing a mixture of 1:4- and 3:6-glucosaccharolactones in the presence of a crystallization inhibitor for the 3:6-lactone prepared by heating an aqueous solution of said lactones and glucosaccharic acid. Specifications 870,051 and 873,296 are referred to.
GB280158A1958-01-281958-01-28Improvements in or relating to the preparation of lactones
ExpiredGB900977A
(en)
Basically substituted esters of phenothiazine-10-carboxylic acid, and acid addition salts of such esters, and process for preparing such esters and salts