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556826-66-5

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556826-66-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 556826-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,6,8,2 and 6 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 556826-66:
(8*5)+(7*5)+(6*6)+(5*8)+(4*2)+(3*6)+(2*6)+(1*6)=195
195 % 10 = 5
So 556826-66-5 is a valid CAS Registry Number.

556826-66-5Downstream Products

556826-66-5Relevant articles and documents

Chemistry of indoles carrying a basic function. Part VII. A new aspect of Stobbe reaction

Moldvai, István,Temesvári-Major, Eszter,Incze, Mária,Platthy, Tünde,Gács-Baitz, Eszter,Szántay, Csaba

, p. 309 - 319 (2003)

While performing Stobbe reactions of a succinic diester derivative (1) different routes were found leading to different indole derivatives (2-5) depending on the reaction conditions applied, thus widening the scope and limitation of this useful procedure. Simpler pyrrolidine (13) and piperidine derivatives (14, 15) were also achieved through application of the intramolecular Stobbe reaction.

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