The CAS Registry Mumber 85377-68-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,3,7 and 7 respectively; the second part has 2 digits, 6 and 8 respectively. Calculate Digit Verification of CAS Registry Number 85377-68: (7*8)+(6*5)+(5*3)+(4*7)+(3*7)+(2*6)+(1*8)=170 170 % 10 = 0 So 85377-68-0 is a valid CAS Registry Number.
Formylation Products of Thioamides; Part II. Synthesis of N-Thioacylformamidines, N-Thioacylformamides, or Nitriles from Thioamides and Formamide Chlorides