The CAS Registry Mumber 72055-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,0,5 and 5 respectively; the second part has 2 digits, 9 and 1 respectively. Calculate Digit Verification of CAS Registry Number 72055-91: (7*7)+(6*2)+(5*0)+(4*5)+(3*5)+(2*9)+(1*1)=115 115 % 10 = 5 So 72055-91-5 is a valid CAS Registry Number.
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Get Best Price for72055-91-5(E)-2-(Hydroxymethyl)-2-butenoic acid [(E)-2-[[(3aR,4R,6E,10E,11aR)-2,3,3a,4,5,8,9,11a-octahydro-6,10-dimethyl-3-methylene-2-oxocyclodeca[b]furan-4-yl]oxycarbonyl]-2-butenyl] ester