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198771-13-0

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198771-13-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198771-13-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,7,7 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 198771-13:
(8*1)+(7*9)+(6*8)+(5*7)+(4*7)+(3*1)+(2*1)+(1*3)=190
190 % 10 = 0
So 198771-13-0 is a valid CAS Registry Number.

198771-13-0Downstream Products

198771-13-0Relevant articles and documents

TaCl5-Silicagel and TaCl5 as new Lewis acid systems for selective tetrahydropyranylation of alcohols and thioacetalisation, trimerisation and aldolisation of aldehydes

Chandrasekhar,Takhi, Mohamed,Reddy, Y. Ravindra,Mohapatra, Suchismita,Rao, C. Rama,Reddy, K. Venkatram

, p. 14997 - 15004 (1997)

TaCl5 adsorbed on silicagel has been utilized for the first time as Lewis acid catalyst for protection of aldehydes and alcohols as thiocetals and THP ethers respectively. Similarly TaCl5 has been exploited as an useful Lewis acid for chemoselective trimerisation and/or aldolisation of aldehydes.

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