457883-49-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 457883-49-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,8,8 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 457883-49:
(8*4)+(7*5)+(6*7)+(5*8)+(4*8)+(3*3)+(2*4)+(1*9)=207
207 % 10 = 7
So 457883-49-7 is a valid CAS Registry Number.
457883-49-7Relevant academic research and scientific papers
Synthesis of chiral 4-nitrophenyl alkyl methylphosphonothioates: BF3·Et2O-catalyzed alcoholysis of phosphonamidothioates
Reddy, Putta Mallikarjuna,Kovach, Ildiko M
, p. 4063 - 4066 (2007/10/03)
Facile and highly enantioselective synthesis of 4-nitrophenyl alkyl methylphosphonothioates 5a-f was achieved in high yields via BF3·Et2O-catalyzed alcoholysis of resolved phosphonamidothioates 4a and 4b.
