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1239513-50-8

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1239513-50-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1239513-50-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,9,5,1 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1239513-50:
(9*1)+(8*2)+(7*3)+(6*9)+(5*5)+(4*1)+(3*3)+(2*5)+(1*0)=148
148 % 10 = 8
So 1239513-50-8 is a valid CAS Registry Number.

1239513-50-8Downstream Products

1239513-50-8Relevant articles and documents

NbCl3-Catalyzed intermolecular [2+2+2] Cycloaddition of alkynes and α,ω-dienes: Highly chemo- and regioselective formation of 5-ω-alkenyl-1,4-substituted-1,3-cyclohexadiene derivatives

Obora, Yasushi,Satoh, Yasushi,Ishii, Yasutaka

experimental part, p. 6046 - 6049 (2010/11/18)

Intermolecular [2+2+2] cycloaddition of tert-butylacetylene with α,ω-dienes was successfully achieved by NbCl3(DME) catalyst to afford 5-ω-alkenyl-1,4-disubstituted-1,3-cyclohexadienes in excellent yields with high chemo- and regioselectivity.

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