89754-43-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89754-43-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,5 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 89754-43:
(7*8)+(6*9)+(5*7)+(4*5)+(3*4)+(2*4)+(1*3)=188
188 % 10 = 8
So 89754-43-8 is a valid CAS Registry Number.
89754-43-8Relevant articles and documents
A CONVENIENT ONE-STEP SYNTHESIS OF 5-(α-ALKANONYL) AND 5-(α-CYCLANONYL)-4-PENTANOLIDES
Kharrat, Abdelmajid,Gardrat, Christian,Maillard, Bernard
, p. 1209 - 1212 (2007/10/02)
The thermolysis of t-butyl perpent-4-enoate in ketones leads to the formation of 5-(α-alkanonyl) and 5-(α-cyclanonyl)-4-pentanolides with fairly good yields.