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163399-21-1

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163399-21-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163399-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,3,9 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 163399-21:
(8*1)+(7*6)+(6*3)+(5*3)+(4*9)+(3*9)+(2*2)+(1*1)=151
151 % 10 = 1
So 163399-21-1 is a valid CAS Registry Number.

163399-21-1Downstream Products

163399-21-1Relevant articles and documents

Scandium trifluoromethanesulfonate as an extremely active Lewis acid catalyst in acylation of alcohols with acid anhydrides and mixed anhydrides

Ishihara, Kazuaki,Kubota, Manabu,Kurihara, Hideki,Yamamoto, Hisashi

, p. 4560 - 4567 (1996)

Scandium trifluoromethanesulfonate (triflate), which is commercially available, is a practical and useful Lewis acid catalyst for acylation of alcohols with acid anhydrides or the esterification of alcohols by carboxylic acids in the presence of p-nitrobenzoic anhydrides. The remarkably high catalytic activity of scandium triflate can be used for assisting the acylation by acid anhydrides of not only primary alcohols but also sterically-hindered secondary or tertiary alcohols. The method presented is especially effective for selective macrolactonization of ω-hydroxy carboxylic acids.

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