99477-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99477-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,4,7 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99477-69:
(7*9)+(6*9)+(5*4)+(4*7)+(3*7)+(2*6)+(1*9)=207
207 % 10 = 7
So 99477-69-7 is a valid CAS Registry Number.
99477-69-7Relevant academic research and scientific papers
A FACILE SYNTHESIS OF THE 20-HYDROXYECDYSONE SIDE CHAIN VIA A DIHYDROFURAN DERIVATIVE
Hedtmann, Udo,Welzel, Peter
, p. 2773 - 2774 (2007/10/02)
Key steps of a new synthesis of the 20-hydroxyecdysone side chain are (i) addition of 2 to 20-ketopregnanes and (ii) the stereoselective reduction of the 22-keto group after OH group protection.
