505030-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 505030-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,5,0,3 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 505030-55:
(8*5)+(7*0)+(6*5)+(5*0)+(4*3)+(3*0)+(2*5)+(1*5)=97
97 % 10 = 7
So 505030-55-7 is a valid CAS Registry Number.
505030-55-7Relevant articles and documents
Synthesis of 1,4-oxazepin-7-ones using baylis-hillman products as key intermediates
Nilov, Dmitry,Raecker, Reinhard,Reiser, Oliver
, p. 2232 - 2242 (2002)
Baylis-Hilman adducts derived from aromatic aldehydes and methyl acrylate can be readily converted to 1,4-oxazepin-7-ones substituted in 2-, 3-, or 4-position by condensation with amino alcohols.