81649-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81649-62-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,4 and 9 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81649-62:
(7*8)+(6*1)+(5*6)+(4*4)+(3*9)+(2*6)+(1*2)=149
149 % 10 = 9
So 81649-62-9 is a valid CAS Registry Number.
81649-62-9Relevant academic research and scientific papers
Total Synthesis of ( +/-)-Picropodophillone
Murphy, William S.,Wattanasin, Sompong
, p. 271 - 276 (2007/10/02)
Following model studies, the synthesis of (+/-)-picropodophillone was completed by first cyclopropanating the appropriate chalcone (11) with ethoxycarbonyl dimethylsulphonium methylide.Treatment of the resulting cyclopropyl ketone with stannic chloride in
