<http://webisa.webdatacommons.org/prov/471518097>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/306508923> .
<http://webisa.webdatacommons.org/306508923>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/306508923>	<http://www.w3.org/ns/prov#value>	"The pyridine derivatives of general formula I, wherein B is other than oxygen and sulphur atoms, Z represents a grouping of the formula: ##STR14## R1 represents a grouping of the formula: --COOR4, in which R4 represents a hydrogen atom, or an alkyl group containing from 1 to 12 carbon atoms, and the other symbols are as hereinbefore defined, i.e. compounds of the general formula: ##STR15## (wherei" .
<http://webisa.webdatacommons.org/prov/516260409>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/306508923> .
<http://webisa.webdatacommons.org/306508923>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .