74420-28-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74420-28-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,2 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74420-28:
(7*7)+(6*4)+(5*4)+(4*2)+(3*0)+(2*2)+(1*8)=113
113 % 10 = 3
So 74420-28-3 is a valid CAS Registry Number.
74420-28-3Relevant articles and documents
RING OPENING OF CYCLOPROPYL KETONES ASSISTED BY THE TRIMETHYLSILYL GROUP
Ochiai, Masahito,Sumi, Kenzo,Fujita, Eiichi
, p. 79 - 80 (2007/10/02)
Cyclopropyl ketones 2 were smoothly cleaved with boron trifluoride-acetic acid under mild reaction conditions by the assistance of trimethylsilyl group to give γ,δ-enones in good yields and the reaction was applied to the formal total synthesis of cis-jasmone.
