The CAS Registry Mumber 37293-22-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,2,9 and 3 respectively; the second part has 2 digits, 2 and 2 respectively. Calculate Digit Verification of CAS Registry Number 37293-22: (7*3)+(6*7)+(5*2)+(4*9)+(3*3)+(2*2)+(1*2)=124 124 % 10 = 4 So 37293-22-4 is a valid CAS Registry Number.
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