133957-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133957-77-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,9,5 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 133957-77:
(8*1)+(7*3)+(6*3)+(5*9)+(4*5)+(3*7)+(2*7)+(1*7)=154
154 % 10 = 4
So 133957-77-4 is a valid CAS Registry Number.
133957-77-4Relevant articles and documents
The diastereoselectivity of intermolecular nitrone cycloaddition to chiral allyl derivatives
Annunziata, Rita,Cinquini, Mauro,Cozzi, Franco,Giaroni, Paola,Raimondi, Laura
, p. 1659 - 1662 (2007/10/02)
The stereoselectivity of some intermolecular nitrone cycloadditions to alkenes featuring heterosubstituted allylic stereocenter is discussed and rationalized.