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221100-80-7

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221100-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221100-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,0 and 0 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 221100-80:
(8*2)+(7*2)+(6*1)+(5*1)+(4*0)+(3*0)+(2*8)+(1*0)=57
57 % 10 = 7
So 221100-80-7 is a valid CAS Registry Number.

221100-80-7Downstream Products

221100-80-7Relevant articles and documents

Reaction of diazoalkanes with unsaturated compounds: 13. A new method of preparation and [1+2]- and [3+2]-cycloaddition reactions of diazopropyne

Tomilov,Okonnishnikova,Shulishov,Shavrin,Nefedov

, p. 2208 - 2212 (2007/10/03)

A THF solution of diazopropyne was obtained in 60% yield by the reaction of a 30% aqueous solution of methylamine with N,N′-dinitroso-N,N′-dipropargylterephthalodiamide. The reactions of diazopropyne with methyl acrylate and methyl methacrylate giving var

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