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691412-28-9

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691412-28-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 691412-28-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,4,1 and 2 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 691412-28:
(8*6)+(7*9)+(6*1)+(5*4)+(4*1)+(3*2)+(2*2)+(1*8)=159
159 % 10 = 9
So 691412-28-9 is a valid CAS Registry Number.

691412-28-9Downstream Products

691412-28-9Relevant articles and documents

PREPARATION OF 3-AMINOALKYL-SUBSTITUTED INDOLE DERIVATIVES FROM PHENYLHYDRAZINES AND AMINOKETONES

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Page 12-13, (2008/06/13)

The present invention relates to a process for the preparation of indole derivatives, particularly those, which are useful as pharmaceutical intermediates. The process involves formation of hydrazone derivative between a phenyl hydrazine and a ketone amine, followed by cyclisation to give desired 2,3-substituted indole derivative in the presence of acid catalyst.

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