Method for the determination of an amino or aminosulphonic acid
US4276049A · kind A · utility
2Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Nov 8, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/173845
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method for the determination of an amino benzoic acid or aminosulphonic acid in urine, plasma or serum. The method consists essentially in reacting a urine, plasma or serum sample with a compound of the 4-phenyl-spiro[furan-2(3H)1'-phthalan]-3,3'-dione type or with a compound of the 2-methoxy-2,4-diphenyl-3(2H)-furanone type or with o-phthaldialdehyde and subsequently carrying out a photometric measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.