The CAS Registry Mumber 128397-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,9 and 7 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 128397-44: (8*1)+(7*2)+(6*8)+(5*3)+(4*9)+(3*7)+(2*4)+(1*4)=154 154 % 10 = 4 So 128397-44-4 is a valid CAS Registry Number.
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Get Best Price for128397-44-419,22,23-tris(acetyloxy)-21-[(acetyloxy)methyl]-25,26-dihydroxy-3,15,26-trimethyl-6,16-dioxo-2,5,17-trioxa-11-azapentacyclo[16.7.1.0~1,21~.0~3,24~.0~7,12~]hexacosa-7,9,11-trien-20-yl benzoate (non-preferred name)