The CAS Registry Mumber 68690-55-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,9 and 0 respectively; the second part has 2 digits, 5 and 5 respectively. Calculate Digit Verification of CAS Registry Number 68690-55: (7*6)+(6*8)+(5*6)+(4*9)+(3*0)+(2*5)+(1*5)=171 171 % 10 = 1 So 68690-55-1 is a valid CAS Registry Number.
Muramyl dipeptide derivatives with multiprenylacetyl group. Synthesis and immunological activities
Fukuda,Kobayashi,Yukimasa,et al.
, p. 3530 - 3535 (2007/10/02)
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