86 BACTERIOLOGICAL AND ENZYME CHEMISTRY 



etc., while the corresponding alcohols are generally given the 

 termination ite or ol ; we have, therefore, the following series 

 of alcohols and corresponding sugars, the aldose and ketose 

 form being given in each case : — 



CH2OH 



I 

 CH2OH 



Methylene glycol 



OH,OH 



I 



CHO 



Glycolyl aldehyde 



or 



Diose 



CH2OH 



CHOH 

 CH2OH 



Griycerol 



CH2OH CH2OH 



I 1 



CHOH CO 



CHO 



Aldose 



CH2QH 



Ketose 



I 



CH,OH 



CHOhIi^ 



CH2OH 



Tetrite 



CH2OH 



(CH0H)3 



CH2OH 



Pentite 



Glycerose or Triose 



CH2OH 



(CHOH), 

 CHjOH 



Hexite 



CHoOH CH2OH CH2OH CH2OH CH2OH CH2OH 



(CH0H)2 CHOH 



(CH0H)3 (CH0H)2 (CH0H)4 (CHOH), 

 CHO CO CHO CO 



Aldopentose CHjOH Aldohexose CHgUJl 



itetotetrose Kefcopentose Ketohexope 



Sugars containing seven, eight or nine atoms of carbon 

 have been obtained, viz., heptoses, octoses and nonoses, but 

 the above list includes those sugars which are met with in 



CHO 



Aldotetrose 



I 



CO 

 CH,OH 



