Compound and its use
US6333198A · kind A · utility
59Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1999 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Mar 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/147777
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of testing the purity or stability to degradation of a sample of lamotrigine or a pharmaceutical dosage form comprising lamotrigine comprises assaying the said sample for the presence of a compound selected from 3-amino-6-(2,3-dichlorophenyl)-1,2,4-triazine-5-(4H)-one (compound A) and N-[5-amino-6-(2,3-dichlorophenyl)-1,2,4-triazine-3-yl]-2,3-dichlorobenzami de (compound B). A process for producing compound B, which is novel, is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.