The CAS Registry Mumber 141438-54-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,4,3 and 8 respectively; the second part has 2 digits, 5 and 4 respectively. Calculate Digit Verification of CAS Registry Number 141438-54: (8*1)+(7*4)+(6*1)+(5*4)+(4*3)+(3*8)+(2*5)+(1*4)=112 112 % 10 = 2 So 141438-54-2 is a valid CAS Registry Number.
A Convenient Preparation of Terminally Differentiated, Selectively Protected Six-Carbon Synthons from D-Glucosamine
Coleman, Robert S.,Dong, Yong,Carpenter, Andrew J.
, p. 3732 - 3735 (2007/10/02)
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