69803-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69803-70-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,8,0 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 69803-70:
(7*6)+(6*9)+(5*8)+(4*0)+(3*3)+(2*7)+(1*0)=159
159 % 10 = 9
So 69803-70-9 is a valid CAS Registry Number.
69803-70-9Relevant academic research and scientific papers
Synthesis of Protected βγ-Unsaturated Ketones from β-Diphenylphosphinoyl Ketones
Earnshaw, Chris,Torr, Richard S.,Warren, Stuart
, p. 2893 - 2902 (2007/10/02)
Ketals of β-diphenylphosphinoyl ketones combine with aldehydes and ketones in the Horner-Wittig reaction to give ketals of βγ-unsaturated ketones.
