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121149-53-9

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121149-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121149-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,1,4 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121149-53:
(8*1)+(7*2)+(6*1)+(5*1)+(4*4)+(3*9)+(2*5)+(1*3)=89
89 % 10 = 9
So 121149-53-9 is a valid CAS Registry Number.

121149-53-9Relevant articles and documents

A One Step Synthesis of 4-Substituted Imidazoles. An Important Observation When N-Alkylating Imidazoles

Whitten, Jeffrey P.,Matthews, Donald P.,McCarthy, James R.,Barbuch, Robert J.

, p. 1845 - 1847 (2007/10/02)

Imidazoles substituted in the 2-position with methyl, 1e, phenyl, 1a, 2-imidazole, 1b-d, or t-butyldiphenylsilyl, 1f, react with soft electrophiles 2 to give modest yields of 4(5)-C-alkylated-imidazoles 3 and N-alkylated products 5.These two products are readily separated by flash chromatography.

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