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27421-77-8

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27421-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27421-77-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,4,2 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 27421-77:
(7*2)+(6*7)+(5*4)+(4*2)+(3*1)+(2*7)+(1*7)=108
108 % 10 = 8
So 27421-77-8 is a valid CAS Registry Number.

27421-77-8Relevant articles and documents

Real-time noninvasive monitoring of cell mortality using a two-photon emissive probe based on quaternary ammonium

Zhang, Mingzhu,Du, Wei,Tian, Xiaohe,Zhang, Ruilong,Zhao, Meng,Zhou, Hongping,Ding, Yaqi,Li, Lin,Wu, Jieying,Tian, Yupeng

supporting information, p. 4417 - 4421 (2018/07/25)

We report that a dicyanyl derivative QN2 containing quaternary ammonium was capable of identifying apoptotic cells by targeting nucleic acid (DNA and RNA) and we were able to observe nuclear ultra-details using a stimulated emission depletion (STED) nanoscopy technique. QN2 could evaluate the anti-cancer drug pesticide effect by monitoring in real-time without interfering with normal cell proliferation. These results suggest the high potential for using QN2 in practice for monitoring apoptosis to evaluate tumor therapy effectiveness or for drug development.

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