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52516-77-5

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52516-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52516-77-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,5,1 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 52516-77:
(7*5)+(6*2)+(5*5)+(4*1)+(3*6)+(2*7)+(1*7)=115
115 % 10 = 5
So 52516-77-5 is a valid CAS Registry Number.

52516-77-5Relevant articles and documents

Stereoselective CrCl2-mediated condensation of aldehydes with functionalized 1,1,1-trichlorides: Synthesis of trisubstituted (Z)-chloroolefins

Falck,Bandyopadhyay, Anish,Barma,Shin, Dong-Soo,Kundu, Abhijit,Krishna Kishore

, p. 3039 - 3042 (2004)

The CrCl2-mediated condensation of aldehydes 1 with a variety of functionalized 1,1,1-trichlorides 2 affords trisubstituted chloroolefins 4 in excellent yields and generally high Z-stereoselectivity. The intermediate dichlorohydrin adducts 3 can be isolated in good yields under conditions of limited reagent and reduced temperature.

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