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24903-69-3

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24903-69-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 24903-69-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,9,0 and 3 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 24903-69:
(7*2)+(6*4)+(5*9)+(4*0)+(3*3)+(2*6)+(1*9)=113
113 % 10 = 3
So 24903-69-3 is a valid CAS Registry Number.

24903-69-3Relevant articles and documents

Preparation method of 4-chloro-2-trifluoromethyl pyrimidine

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, (2017/07/20)

The invention discloses a preparation method of 4-chloro-2-trifluoromethyl pyrimidine (formula I). According to the preparation method, cheap and easily purchased methyl trifluoroacetate and malonamide are taken as the raw materials. The preparation method has the advantages that no pricy material is used, the reaction conditions are mild, the used equipment is simple, the EHS risk is little, the cost is low, and the preparation method is suitable for massive production.

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