:Template:Chembox CASNo/format
{{#switch:{{{localValue|}}}
|=
|none|None={{#if:{{{ix_label|}}}|{{{ix_label|}}}: }}{{{localValue|}}}
|#default={{#if:{{{ix_label|}}}|{{{ix_label|}}}: }}[https://commonchemistry.cas.org/detail?cas_rn={{{localValue}}} {{{localValue}}}]{{#if:{{{comment|}}} | {{{comment}}}}}{{{botref|}}}}}