[chemical substances]
   reactive intermediates
     Class radicals [X•]
       81.1.1 Class alkyl radicals [CnH2n+1•]
       81.1.2 Class aminyl radicals [R2N•]
       81.2.4 Class aminoxyl radicals [R2NO• <-> R2N•+-O]
       81.2.4 Class iminoxyl radicals [R2C=NO•]
       81.2.5 Class sulfenyl radicals [RS• (R≠H)]