The CAS Registry Mumber 90700-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,0 and 0 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 90700-77: (7*9)+(6*0)+(5*7)+(4*0)+(3*0)+(2*7)+(1*7)=119 119 % 10 = 9 So 90700-77-9 is a valid CAS Registry Number.
Rapid peptide synthesis in liquid phase. Preparation of angiotensin II and delta-sleep-inducing peptide by the 'hold-in' solution method
Nozaki,Muramatsu
, p. 2165 - 2168 (2007/10/02)
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