The CAS Registry Mumber 98670-73-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,6,7 and 0 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 98670-73: (7*9)+(6*8)+(5*6)+(4*7)+(3*0)+(2*7)+(1*3)=186 186 % 10 = 6 So 98670-73-6 is a valid CAS Registry Number.
Synthetic anthracyclinones, XXIX. Quinone antibiotics with five substituents at the hydroaromatic ring
Krohn,Tolkiehn,Lehne,et al.
, p. 1311 - 1328 (2007/10/02)
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