190277-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 190277-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,2,7 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 190277-33:
(8*1)+(7*9)+(6*0)+(5*2)+(4*7)+(3*7)+(2*3)+(1*3)=139
139 % 10 = 9
So 190277-33-9 is a valid CAS Registry Number.
190277-33-9Relevant articles and documents
5-exo versus 6-endo intramolecular carbolithiation of N-allyl-N-(2-lithioallyl)amines
Barluenga, Jose,Sanz, Roberto,Fananas, Francisco J.
, p. 2763 - 2766 (2007/10/03)
N-Allyl-N-(2-lithioallyl)amines undergo intramolecular carbametallation via 5-exo or 6-endo addition. The course of the reaction depends on the nitrogen electron density. 3-Functionalized-4-methylenepyrrolidines can be synthesized.
