I couldn’t find any answer on google, apparently they’re not chronological in the order they were discovered. Does anyone know?
I don’t know outright, but B was assumed to be one when in fact it was a compilation of many (to researches “surprise”). You may be able to figure out timelines if you look at the history of each??
B Overview: https://pubmed.ncbi.nlm.nih.gov/19892133/
Thiamin: https://pubmed.ncbi.nlm.nih.gov/23183292/
Riboflavin: https://pubmed.ncbi.nlm.nih.gov/23183293/
Nicotinamide (Niacin), biotin: https://pubmed.ncbi.nlm.nih.gov/23183297/
Pyridoxine: https://pubmed.ncbi.nlm.nih.gov/23183295/
Folic Acid: https://pubmed.ncbi.nlm.nih.gov/23183294/
Cobalamin: https://pubmed.ncbi.nlm.nih.gov/23183296/