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91849-09-1

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91849-09-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91849-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,4 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91849-09:
(7*9)+(6*1)+(5*8)+(4*4)+(3*9)+(2*0)+(1*9)=161
161 % 10 = 1
So 91849-09-1 is a valid CAS Registry Number.

91849-09-1Relevant articles and documents

Halo-containing 3-methylflavone-8-carboxylic acid derivatives

-

, (2008/06/13)

This invention relates to derivatives of 3-methylflavone-8-carboxylic acid represented by the formula (1) STR1 wherein R represents a hydrogen atom, a lower alkyl group or a group STR2 (wherein R1 and R2 represent a lower alkyl group or R1 and R2, when taken together with the nitrogen atom to which they are attached, may form a heterocyclic ring with or without an intervening hetero atom, and n is an integer of 1 to 4), and X represents a halogen atom, which are useful as intermediates. This invention also relates to processes for preparing the same.

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