The CAS Registry Mumber 20408-73-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,0 and 8 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 20408-73: (7*2)+(6*0)+(5*4)+(4*0)+(3*8)+(2*7)+(1*3)=75 75 % 10 = 5 So 20408-73-5 is a valid CAS Registry Number.
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Get Best Price for20408-73-5Triacetic acid 4'',7,7',7''-tetramethoxy-2,2',2''-tris(3,4-dimethoxyphenyl)-4,6':4',6''-terchroman-3,3',3''-triyl ester