The CAS Registry Mumber 88204-44-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,2,0 and 4 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 88204-44: (7*8)+(6*8)+(5*2)+(4*0)+(3*4)+(2*4)+(1*4)=138 138 % 10 = 8 So 88204-44-8 is a valid CAS Registry Number.
A new synthesis of a steroid side chain via stereocontrolled protonation: Synthesis of (-)-desmosterol
Takano,Yamada,Numata,Ogasawara
, p. 760 - 761 (2007/10/02)
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