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139474-63-8

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139474-63-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139474-63-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,7 and 4 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139474-63:
(8*1)+(7*3)+(6*9)+(5*4)+(4*7)+(3*4)+(2*6)+(1*3)=158
158 % 10 = 8
So 139474-63-8 is a valid CAS Registry Number.

139474-63-8Downstream Products

139474-63-8Relevant articles and documents

The effect of fluoromethyl groups on the diastereoselectivity in the electrophilic alkylation

Tamura, Kenji,Yamazaki, Takashi,Kitazume, Tomoya,Kubota, Toshio

, p. 918 - 930 (2007/10/03)

The effect of fluoromethyl groups on the diastereoselectivity in the electrophilic alkylation is described. In particular, the electrophilic alkylation of enolates with a trifluoromethyl group was proceeded with highly diastereofacial selectivity based on the steric and/or electrostatic effect of substituent with strong electron withdrawing.

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