905718-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 905718-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,5,7,1 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 905718-74:
(8*9)+(7*0)+(6*5)+(5*7)+(4*1)+(3*8)+(2*7)+(1*4)=183
183 % 10 = 3
So 905718-74-3 is a valid CAS Registry Number.
905718-74-3Relevant articles and documents
Efficient entry to polysubstituted pyrrolizidines, indolizidines and quinolizidines via a sequential reaction process
Ma, Dawei,Zhu, Wei
, p. 1181 - 1184 (2006)
A sequential SN2-Michael addition-Michael addition reaction process between ω-iodo-α,β-alkynoates and δ- or γ-amino α,β-unsaturated esters is developed, which affords polysubstituted pyrrolizidines, indolizidines or quinolizidines in good yield
