[1]Patent:WO2009/94224,2009,A1.Locationinpatent:Page/Pagecolumn55
[2]PhosphorusandSulfurandtheRelatedElements,1980,vol.9,p.329-336
[1]CurrentPatentAssignee:TAKEDAPHARMACEUTICALCOMPANYLIMITED-WO2009/94224,2009,A1Locationinpatent:Page/Pagecolumn55-56