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74840-98-5

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74840-98-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74840-98-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,4 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74840-98:
(7*7)+(6*4)+(5*8)+(4*4)+(3*0)+(2*9)+(1*8)=155
155 % 10 = 5
So 74840-98-5 is a valid CAS Registry Number.

74840-98-5Downstream Products

74840-98-5Relevant articles and documents

Syntheses and Reactions of Some 4,5-Dihaloimidazole-2-carboxylic Acid Derivatives

Dirlam, John P.,James, Richard B.,Shoop, Eleanor V.

, p. 409 - 411 (2007/10/02)

The preparation of 5H,10H-diimidazopyrazine-5,10-dione (2a) and its 2,3,7,8-tetrabromo- and 2,3,7,8-tetrachloro- analogs (2b and 2c, respectively) is reported.These dimers, when allowed to react with various anilines, afford imidazole-2-carboxamides (3a-c).

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