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Is your fridge running......then go catch it.
Many substances were used; chloroform is probable the simplest.
Edward Joseph Masters has written:
'Synthesis of some dihydro-thiazolo pyrimidines and purines'
It is 6-chloro-1,1-dioxo-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide with the formula, C7H8ClN3O4S2
Fulvic acid is 4,10-Dihydro-3,7,8-trihydroxy-3-methyl-10-oxo-1H,3H-pyrano[4,3-b][1]benzopyran-9-carboxylic acid and its molecular formula is C14H12O8