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198127-99-0

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198127-99-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198127-99-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,1,2 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 198127-99:
(8*1)+(7*9)+(6*8)+(5*1)+(4*2)+(3*7)+(2*9)+(1*9)=180
180 % 10 = 0
So 198127-99-0 is a valid CAS Registry Number.

198127-99-0Relevant articles and documents

Polyfunctionalisation of imidazole via sequential imidazolyl anion formation

Carver, David S.,Lindell, Stephen D.,Saville-Stones, Elizabeth A.

, p. 14481 - 14496 (1997)

A method for achieving the sequential functionalisation of the imidazole ring in the order C-5→C-4→C-2 is described. The chemistry proceeds via the regioselective formation of positionally stable imidazolyl anions which are reacted with electrophiles (aldehydes, alkyl halides, azides, formamides, isocyanates) to afford substituted imidazoles in 31-90% yield.

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