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221697-97-8

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221697-97-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221697-97-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,6,9 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 221697-97:
(8*2)+(7*2)+(6*1)+(5*6)+(4*9)+(3*7)+(2*9)+(1*7)=148
148 % 10 = 8
So 221697-97-8 is a valid CAS Registry Number.

221697-97-8Downstream Products

221697-97-8Relevant academic research and scientific papers

Synthesis and inhibitory activity of 4-alkynyl and 4-alkenylquinazolines: Identification of new scaffolds for potent EGFR tyrosine kinase inhibitors

Kitano, Yasunori,Suzuki, Tsuyoshi,Kawahara, Eiji,Yamazaki, Takahisa

, p. 5863 - 5867 (2008/04/03)

The present study identified several 4-alkynyl and 4-alkenylquinazolines that serve as novel and potent EGFR tyrosine kinase inhibitors. The IC50 values of these compounds are in the nanomolar range. In addition, the 4-(4-phenylbut-1-yn/en-yl)q

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