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n4google.
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
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provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:229052418
rdf:type
prov:Entity
prov:value
R3 and R4 are identical or different and are a hydrogen atom, a halogen atom, a C1 -C10 -alkyl group, which may be halogenated, a C6 -C10 -aryl group, an --NR2 15, --SR15, --OSiR3 15, --SiR3 15 or --PR2 15 radical in which R15 is a halogen atom, a C1 -C10 -alkyl group or a C6 -C10 -aryl group,
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n4:com
Subject Item
isap:249258957
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isa:229052418