Template:CAS

{{#ifeq:{{lc:{{{1|x}}}}}|{{uc:{{{1|y}}}}}|[https://commonchemistry.cas.org/detail?cas_rn={{#ifeq:{{lc:{{{1|x}}}}}|{{uc:{{{1|y}}}}}|{{{1}}}|}}&title={{{2|}}} {{{1|(error 1)}}}] | {{{1|}}}}} {{{2|}}}

{{Documentation}}