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211256-73-4

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211256-73-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 211256-73-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,2,5 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 211256-73:
(8*2)+(7*1)+(6*1)+(5*2)+(4*5)+(3*6)+(2*7)+(1*3)=94
94 % 10 = 4
So 211256-73-4 is a valid CAS Registry Number.

211256-73-4Relevant articles and documents

Synthesis of new 4-benzoyl-5-hydroxy-3-trifluoromethylpyrazole derivatives via [1,3] rearrangements of benzoyl group using tert- butyllithium

Jeon, Dong Ju,Yu, Dong Wook,Yun, Kyeong Yeol,Ryu, Eung K.

, p. 2159 - 2166 (1998)

The 4-benzoyl-3-trifluoromethyl-5-p-toluenesulfonyloxypyrazole derivatives (7a - c) were synthesized by a new procedure involving rearrangement of the benzoyl groups in 5-benzoyloxy-4-bromo-3- trifluoromethylpyrazole derivatives (5a - c) to 4-benzoyl-5-hy

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