117169-28-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117169-28-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,1,6 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 117169-28:
(8*1)+(7*1)+(6*7)+(5*1)+(4*6)+(3*9)+(2*2)+(1*8)=125
125 % 10 = 5
So 117169-28-5 is a valid CAS Registry Number.
117169-28-5Relevant articles and documents
SYNTHESYS OF THE C11-C28 SUBUNIT OF THE AVERMECTINS
Hirama, Masahiro,Nakamine, Takeshi,Ito, Sho
, p. 1197 - 1198 (2007/10/02)
Construction of the trisubstituted double bond of the C11-C28 subunit of avermectin A1a and B1a has been achieved in a five-step sequence.