The CAS Registry Mumber 76378-80-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,3,7 and 8 respectively; the second part has 2 digits, 8 and 0 respectively. Calculate Digit Verification of CAS Registry Number 76378-80: (7*7)+(6*6)+(5*3)+(4*7)+(3*8)+(2*8)+(1*0)=168 168 % 10 = 8 So 76378-80-8 is a valid CAS Registry Number.
The Preparation of Methionine-Containing Peptides with Trifluoroacetyl Protection of Amino Groups and 2,2,2-Trichloroethyl Ester Protection of Carboxyl Groups
Carson, John F.
, p. 730 - 733 (1980)
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