The CAS Registry Mumber 53770-95-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,7,7 and 0 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 53770-95: (7*5)+(6*3)+(5*7)+(4*7)+(3*0)+(2*9)+(1*5)=139 139 % 10 = 9 So 53770-95-9 is a valid CAS Registry Number.
A phosphorylation of steroids and a dienone phenol rearrangement leading to a secosteroidal aldehyde which has a strong toxicity
Miki,Hiraga,Masuya,Asako,Fujii
, p. 1439 - 1450 (2007/10/13)
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