197777-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197777-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,7,7 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 197777-99:
(8*1)+(7*9)+(6*7)+(5*7)+(4*7)+(3*7)+(2*9)+(1*9)=224
224 % 10 = 4
So 197777-99-4 is a valid CAS Registry Number.
197777-99-4Relevant academic research and scientific papers
S(N)Ar macrocyclisation: A new approach towards the synthesis of D-O-E- segment of vancomycin
Rama Rao,Gurjar,Lakshmipathi,Reddy,Nagarajan,Pal, Shashwati,Sarma,Tripathy
, p. 7433 - 7436 (2007/10/03)
A new approach towards the synthesis of D-O-E- segment of vancomycin by S(N)Ar macrocyclisation is described.
