Pyrol or Pyrrol: How To spell?
The word Pyrol is misspelled against Pyrrol, a noun meaning "A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red."
Pyrrol has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings py & ol which should not be misspelled with single 'R'
Wrong Spelling:  py-r-ol  Correct Spelling:  py-rr-ol 
Find more incorrect spellings of Pyrrol to spell right way.