494844-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 494844-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,4,8,4 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 494844-81:
(8*4)+(7*9)+(6*4)+(5*8)+(4*4)+(3*4)+(2*8)+(1*1)=204
204 % 10 = 4
So 494844-81-4 is a valid CAS Registry Number.
494844-81-4Relevant articles and documents
A new convergent approach to α-branched alkynes
Renard, Delphine,Rezaei, Hadi,Zard, Samir Z.
, p. 1257 - 1260 (2007/10/03)
A variety of α-branched alkynes can be easily assembled by a Knoevenagel type condensation of 4-unsubstituted isoxazolin-5-ones with aldehydes or ketones, followed by conjugate addition of an organometallic reagent and nitrosative cleavage of the heterocy
