The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 2000
Filed:
Nov. 12, 1992
Toshio Kurihara, Yaizu, JP;
Toshiyuki Nishio, Yaizu, JP;
Hisao Yamamoto, Yaizu, JP;
Minoru Kamimura, Yaizu, JP;
Shinichi Teshima, Tsuruga, JP;
Tsuneo Hanyu, Tsuruga, JP;
Shigenori Emi, Tsuruga, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
A sugar ester derivative of the general formula (I) ##STR1## wherein G stands for a group of the formula (A) ##STR2## or a group of the formula (B) ##STR3## wherein .lambda. means 0 or 1; at least one of R.sub.1 and R.sub.2 means an ester residue of a saturated or unsaturated fatty acid having 1-30 carbon atoms and the other group means hydrogen atom or acetyl group, and R.sub.3 means a group of the formula (C) ##STR4## wherein X means a halogen atom, m means an integer of 0 to 4, Y means hydroxy group, an alkoxy group, a carboxyl group or sulfonic acid group, n means 0 or 1 and Z means nitro group or nitrovinyl group and its use. The sugar ester derivative of the general formula (I) is useful as a substrate for the measurement of lipase or esterase activities, and the reagents and the methods for measuring lipase or esterase activities which comprise said sugar ester derivative as the substrate are excellent in terms of reproducibility and sensitivity and enable the measurement of lipase or esterase activities in accordance with rate-assay method by an easy procedure.