The CAS Registry Mumber 117710-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,1 and 0 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 117710-25: (8*1)+(7*1)+(6*7)+(5*7)+(4*1)+(3*0)+(2*2)+(1*5)=105 105 % 10 = 5 So 117710-25-5 is a valid CAS Registry Number.
Synthesis of the cyclodepsipeptide nordidemnin B, a cytotoxic minor product isolated from the sea tunicate Trididemnum cyanophorum
Jouin,Poncet,Dufour,Pantaloni,Castro
, p. 617 - 627 (2007/10/02)
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