155257-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155257-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,2,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 155257-20:
(8*1)+(7*5)+(6*5)+(5*2)+(4*5)+(3*7)+(2*2)+(1*0)=128
128 % 10 = 8
So 155257-20-8 is a valid CAS Registry Number.
155257-20-8Relevant articles and documents
Synthesis of secorapamycin esters and amides
Skotnicki, Jerauld S.,Kearney, Robert M.,Smith, Andri L.
, p. 197 - 200 (2007/10/02)
Secorapamycin acid has been converted to a variety of functionalized esters and amides. Sequential retroaldol.readol reaction of a secorapamycin amide provided a truncated analog.
