121409-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121409-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,4,0 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121409-68:
(8*1)+(7*2)+(6*1)+(5*4)+(4*0)+(3*9)+(2*6)+(1*8)=95
95 % 10 = 5
So 121409-68-5 is a valid CAS Registry Number.
121409-68-5Relevant articles and documents
Synthesis of N-Substituted Pyrroles From Azlactones via 1,3-Oxazolium 5-Oxides
Hershenson, Fred. M.,Pavia, Michael R.
, p. 999 - 1001 (2007/10/02)
In situ N-alkylation of azlactones (1,3-oxazol-5(4H)-ones) with reactive alkylating agents has been successfully accomplished.The resulting mesoionic 1,3-oxazolium 5-oxides (munchnones) are further transformed into N-alkylated pyrroles via a 1,3-dipolar c