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1257661-31-6

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1257661-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257661-31-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,6,6 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1257661-31:
(9*1)+(8*2)+(7*5)+(6*7)+(5*6)+(4*6)+(3*1)+(2*3)+(1*1)=166
166 % 10 = 6
So 1257661-31-6 is a valid CAS Registry Number.

1257661-31-6Relevant articles and documents

Enantioselective α-arylation of O-carbamates via sparteine-mediated lithiation and Negishi cross-coupling

Royal, Titouan,Baumgartner, Yann,Baudoin, Olivier

, p. 166 - 169 (2017)

A general and highly enantioselective arylation of carbamates derived from primary alcohols was developed by combining Hoppe's sparteine-mediated asymmetric lithiation with Negishi cross-coupling. Coupled with Aggarwal's lithiation-borylation sequence, the current method provides a short and divergent access to a variety of enantioenriched secondary and tertiary benzylic alcohols.

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