7287-58-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7287-58-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,8 and 7 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7287-58:
(6*7)+(5*2)+(4*8)+(3*7)+(2*5)+(1*8)=123
123 % 10 = 3
So 7287-58-3 is a valid CAS Registry Number.
7287-58-3Relevant articles and documents
Synthesis of Mono- and Divinyl Ethers of Tetra(oxyethylene)
Bayer, Ernst,De-Qing, Wei,Geckeler, Kurt
, p. 1994 - 1997 (2007/10/02)
The derivatives 3, 4, and 6 - 8 of tetra(oxyethylene) (1) are prepared. 3, 4, and 8 are obtained by direct vinylation in the presence of vinyl acetate and mercury acetate. 6 and 7 are prepared by esterification of 1 with 3,5-dinitrobenzoyl chloride (5) an