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75519-81-2

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75519-81-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75519-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,1 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75519-81:
(7*7)+(6*5)+(5*5)+(4*1)+(3*9)+(2*8)+(1*1)=152
152 % 10 = 2
So 75519-81-2 is a valid CAS Registry Number.

75519-81-2Relevant articles and documents

Synthesis of 1,4-Disubstituted (or 1,4,4-Trisubstituted) 2,3,5,6,11-Pentaoxabicycloundecanes

Miura, Masahiro,Ikegami, Akio,Nojima, Masatomo,Kusabayashi, Shigekazu

, p. 1279 - 1281 (1980)

The reaction of a mixture of bicyclic ozonides (trioxolans), carbonyl compounds, and hydrogen peroxide in the presence of catalytic amounts of chlorosulphonic acid gives the corresponding 2,3,5,6,11-pentaoxabicycloundecanes in 3-35percent yield.

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