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121902-50-9

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121902-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121902-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,0 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121902-50:
(8*1)+(7*2)+(6*1)+(5*9)+(4*0)+(3*2)+(2*5)+(1*0)=89
89 % 10 = 9
So 121902-50-9 is a valid CAS Registry Number.

121902-50-9Downstream Products

121902-50-9Relevant articles and documents

Reactions of N-Substituted Pyrrole Derivatives and Related Compounds with 3,4,5,6-Tetrachloro-1,2-benzoquinone

Saito, Katsuhiro,Horie, Yoichi,Takahashi, Kensuke

, p. 4986 - 4988 (2007/10/02)

While furans and oxazoles give -type cycloaddition products in the reactions with 3,4,5,6-tetrachloro-1,2-benzoquinone, 1-methyl-, 1-phenyl-, and 1-dimethylaminopyrrole and 1-methylindole afforded keto-enol-type substitution products under the same r

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