https://www.isibang.ac.in/~library/onlinerz/resources/chem-v1.pdf
https://chemistry.ucr.edu/sites/g/files/rcwecm2681/files/2019-10/Chapter1.pdf
https://www.lamar.edu/arts-sciences/_files/documents/chemistry-biochemistry/dorris/chapter8.pdf
https://www.researchgate.net/publication/347983332_Biochemistry_Basics