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140138-81-4

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140138-81-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140138-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,1,3 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 140138-81:
(8*1)+(7*4)+(6*0)+(5*1)+(4*3)+(3*8)+(2*8)+(1*1)=94
94 % 10 = 4
So 140138-81-4 is a valid CAS Registry Number.

140138-81-4Relevant articles and documents

Catalytic Enantioselective Access to Dihydroquinoxalinones via Formal α-Halo Acyl Halide Synthon in One Pot

Crescenzi, Carlo,Lattanzi, Alessandra,Mancinelli, Michele,Mazzanti, Andrea,Meninno, Sara,Volpe, Chiara

, p. 23819 - 23826 (2021)

An enantioselective one-pot catalytic strategy to dihydroquinoxalinones, featuring novel 1-phenylsulfonyl-1-cyano enantioenriched epoxides as masked α-halo acyl halide synthons, followed by a domino ring-opening cyclization (DROC), is documented. A popula

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