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157730-91-1

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157730-91-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157730-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,3 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157730-91:
(8*1)+(7*5)+(6*7)+(5*7)+(4*3)+(3*0)+(2*9)+(1*1)=151
151 % 10 = 1
So 157730-91-1 is a valid CAS Registry Number.

157730-91-1Downstream Products

157730-91-1Relevant articles and documents

Tris(pentafluorophenyl)borane: a mild and efficient catalyst for the chemoselective tritylation of alcohols

Reddy, Ch. Raji,Rajesh,Balaji,Chethan

, p. 970 - 973 (2008/09/17)

An efficient acid-catalyzed protection of alcohols as trityl ethers is described using triphenylmethanol in the presence of tris(pentafluorophenyl)borane (3 mol %) in dichloromethane at room temperature. The chemoselectivity of this protocol is demonstrat

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