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875145-55-4

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875145-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 875145-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,5,1,4 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 875145-55:
(8*8)+(7*7)+(6*5)+(5*1)+(4*4)+(3*5)+(2*5)+(1*5)=194
194 % 10 = 4
So 875145-55-4 is a valid CAS Registry Number.

875145-55-4Relevant articles and documents

Practical synthesis of a benzophenone-based NNRT inhibitor of HIV-1

Wang, Xiao-Jun,Zhang, Li,Sun, Xiufeng,Lee, Heewon,Krishnamurthy, Dhileepkumar,O'Meara, Jeff A.,Landry, Serge,Yoakim, Christiane,Simoneau, Bruno,Yee, Nathan K.,Senanayake, Chris H.

experimental part, p. 561 - 566 (2012/07/03)

A convergent synthesis of NNRTI 1 is described. The key step involves a direct coupling of acid chloride 4 with Grignard reagent 11 in the presence of bis[2-(N,N-dimethylamino)ethyl] ether that moderates the reactivity of the Grignard reagent to give benzophenone 7. An efficient 2-step process for the preparation of 2-fluoro-3-methyl-4-aminobenzoic acid (3) is also described.

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