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213991-96-9

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213991-96-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213991-96-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,9,9 and 1 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 213991-96:
(8*2)+(7*1)+(6*3)+(5*9)+(4*9)+(3*1)+(2*9)+(1*6)=149
149 % 10 = 9
So 213991-96-9 is a valid CAS Registry Number.

213991-96-9Relevant articles and documents

Coupling reactions of ortho-substituted aryl halides with alkynes. The synthesis of functionalized 1-naphthyl-, 1-(1-naphthyl)-2-phenyl-, and 1,2- bis(1-naphthyl)acetylenes

Stara, Irena G.,Stary, Ivo,Kollarovic, Adrian,Teply, Filip,Saman, David,Fiedler, Pavel

, p. 11209 - 11234 (1998)

Coupling of 2-functionalized 1-naphthyl halides with gaseous acetylene, (trialkylsilyl)acetylenes, and aryl acetylenes under Pd(PPh3)4 or Pd(PPh3)4/CuI catalysis has been investigated to prepare 1-naphthyl-, 1-

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