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33223-83-5

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33223-83-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33223-83-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,2 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33223-83:
(7*3)+(6*3)+(5*2)+(4*2)+(3*3)+(2*8)+(1*3)=85
85 % 10 = 5
So 33223-83-5 is a valid CAS Registry Number.

33223-83-5Relevant articles and documents

A simple and efficient conversion of tertiary cyclopropanols to 2-substituted allyl halides

Kozyrkov, Yurii Yu.,Kulinkovich, Oleg G.

, p. 443 - 446 (2002)

Readily available sulphonates of tertiary cyclopropanols are converted into 2-substituted allyl bromides in high yields under the action of magnesium bromide in diethyl ether. Magnesium chloride, aluminium chloride and titanium tetrachloride also induce effectively the transformation of cyclopropyl sulphonates into the corresponding allyl chlorides.

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