128459-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128459-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,5 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128459-49:
(8*1)+(7*2)+(6*8)+(5*4)+(4*5)+(3*9)+(2*4)+(1*9)=154
154 % 10 = 4
So 128459-49-4 is a valid CAS Registry Number.
128459-49-4Relevant academic research and scientific papers
Synthesis of the spiroketal fragment of avermectin B(1b)
Crimmins,O'Mahony
, p. 5993 - 5996 (2007/10/02)
A new synthesis of the spiroketal fragment of the potent antiparasitic agent, avermectin B(1b), utilizing an improved procedure for the preparation of unsaturated spiroketals from lactones is described.
