Pyrogalol or Pyrogallol: How To spell?
The word Pyrogalol is misspelled against Pyrogallol, a noun meaning "A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes."
Pyrogallol has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings pyroga & ol which should not be misspelled with single 'L'
Wrong Spelling:  pyroga-l-ol  Correct Spelling:  pyroga-ll-ol 
Find more incorrect spellings of Pyrogallol to spell right way.