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662143-15-9

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662143-15-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 662143-15-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,2,1,4 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 662143-15:
(8*6)+(7*6)+(6*2)+(5*1)+(4*4)+(3*3)+(2*1)+(1*5)=139
139 % 10 = 9
So 662143-15-9 is a valid CAS Registry Number.

662143-15-9Downstream Products

662143-15-9Relevant articles and documents

Catalytic enantioselective cyclopropanation of allylic alcohols using recyclable fluorous disulfonamide ligand

Miura, Tsuyoshi,Itoh, Keisuke,Yasaku, Yumi,Koyata, Naka,Murakami, Yasuoki,Imai, Nobuyuki

, p. 5813 - 5815 (2008)

Cyclopropanation of allylic alcohols with Et2Zn and CH2I2 in the presence of a catalytic amount of fluorous disulfonamide 3 afforded the corresponding cyclopropylmethanols in 69-96% yield with 49-83% ee. The fluorous ligand 3 was readily recovered from the reaction mixture by the fluorous solid-phase extraction (FSPE) and could be reused without a significant loss of the catalytic activity and enantioselectivity.

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