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Collins reagent
Molecular formula : CrO3 2C5H5N
CAS :

nature : dark red color Crystal. Easy to absorbing moisture. Dichloromethane soluble inert solvent. Batches of chromic anhydride added by cryogenic cooling excessive anhydrous pyridine Preparation (not reversing increases, easy fire!) . Organic Synthesis will be used for primary alcohol or SIN for alcohol oxidation of aldehyde or ketone oxidants, especially applicable to molecules containing sensitive to acid groups (such as acetal), or carbon-carbon double bond in the oxidation of alcohols, they generally will not be affected.


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