The CAS Registry Mumber 81980-39-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,8 and 0 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 81980-39: (7*8)+(6*1)+(5*9)+(4*8)+(3*0)+(2*3)+(1*9)=154 154 % 10 = 4 So 81980-39-4 is a valid CAS Registry Number.
Get Best Price for81980-39-4Carbamic acid (1S,2R)-2,7-diamino-1-[9-(4-hydroxy-5-phosphonooxymethyl-tetrahydro-furan-2-yl)-6-oxo-6,9-dihydro-1H-purin-2-ylamino]-6-methyl-5,8-dioxo-2,3,5,8-tetrahydro-1H-pyrrolo[1,2-a]indol-9-ylmethyl ester