2-benzothiazolyl tetrazolium salt indicators
US5300637A · kind A · utility
10Cited by
2References
2Claims
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Key dates
| Filing date | Jun 18, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jun 18, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2-Benzothiazolyl tetrazolium salt compounds have been found to be characterized by a reflectance spectrum exhibiting an extended plateau above about 600-650 nm. Such compounds are useful as chromogenic indicators for reducing substances such as NADH. The reflectance plateau confers improved accuracy to analytical assays, particularly for the determination of analytes of medical diagnostic significance, in which a colorimetric response on a reagent carrier matrix is measured by reflectance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.