[1]JournalofHeterocyclicChemistry,2004,vol.41,#2,p.273-276
[1]Patent:US6552230,2003,B1,
[2]Patent:US6552230,2003,B1,
[3]ArchivderPharmazie,1983,vol.316,#7,p.638-638
[4]JournalofHeterocyclicChemistry,2004,vol.41,#2,p.273-276
[5]Patent:US3965113,1976,A,
[6]Patent:US4034107,1977,A,
[7]Patent:US4072696,1978,A,
[8]Patent:US4011320,1977,A,
[1]Patent:US6552230,2003,B1,
[1]Patent:US3954791,1976,A,
[1]Patent:US6498275,2002,B1,
[1]Patent:DE2434183,1976, Chem.Abstr.,1976,vol.84
[1]Patent:DE2434183,1976, Chem.Abstr.,1976,vol.84
[1]Patent:DE2434183,1976, Chem.Abstr.,1976,vol.84
[1]Patent:DE2434183,1976, Chem.Abstr.,1976,vol.84
[1]Patent:DE2434183,1976, Chem.Abstr.,1976,vol.84