134253-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134253-28-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,5 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 134253-28:
(8*1)+(7*3)+(6*4)+(5*2)+(4*5)+(3*3)+(2*2)+(1*8)=104
104 % 10 = 4
So 134253-28-4 is a valid CAS Registry Number.
134253-28-4Relevant articles and documents
A NEW ALKYLATION METHOD OF THE CARBON α TO THE NITROGEN OF SECONDARY AMINES
Roussi, Georges,Zhang, Jidong
, p. 1443 - 1446 (2007/10/02)
A route to the alkylation of the carbon α to the nitrogen of secondary amines 1a,c-g is proposed which is based upon a new and efficient synthesis of oxazolidines 3 from β-hydroxy tertiary amine N-oxides 2.
