521291-67-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 521291-67-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,1,2,9 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 521291-67:
(8*5)+(7*2)+(6*1)+(5*2)+(4*9)+(3*1)+(2*6)+(1*7)=128
128 % 10 = 8
So 521291-67-8 is a valid CAS Registry Number.
521291-67-8Relevant articles and documents
Asymmetric intramolecular aza-Michael reaction using environmentally friendly organocatalysis
Takasu, Kiyosei,Maiti, Soumen,Ihara, Masataka
, p. 51 - 55 (2003)
This communication describes enantioselective intramolecular aza-Michael reaction to prepare 1,2,3,4-tetrahydroisoquinolines by using organocatalysts. The organocatalytic reaction offers new green chemical process in heterocyclic chemistry. Additional not
