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212128-05-7

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212128-05-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 212128-05-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,1,2 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 212128-05:
(8*2)+(7*1)+(6*2)+(5*1)+(4*2)+(3*8)+(2*0)+(1*5)=77
77 % 10 = 7
So 212128-05-7 is a valid CAS Registry Number.

212128-05-7Relevant articles and documents

One-Pot Glycosylation Strategy Assisted by Ion Mobility-Mass Spectrometry Analysis toward the Synthesis of N-Linked Oligosaccharides

Ho, Yi-Chi,Ponnapalli, Kalyana Kumar,Sekhar Vasamsetti, Bhanu Vijaya,Shie, Jiun-Jie,Tseng, Mei-Chun

, p. 5339 - 5357 (2022/04/19)

N-Glycans are major constituents of several cellular glycoproteins. One-pot strategies for the synthesis of N-glycans are crucial for the rapid generation of pure samples to determine their biological functions. Herein, we describe a double one-pot strategy for the synthesis of N-glycans assisted by an IM-MS analysis approach for rapid screening of optimized glycosylation reaction conditions. This research includes triflate-mediated direct β-mannosylation and tandem glycosylation in a one-pot strategy for the synthesis of the challenging N-linked trisaccharide core β-5. Furthermore, a one-pot sequential glycosylation of the N-linked trisaccharide core 7 furnishes diverse high-mannose type N-glycans with excellent stereo- and regioselectivities. In particular, ion mobility-mass spectrometry-based quantitative analysis is applied to identify the stereo- and regioselective outcomes of the crude reaction mixtures to develop a highly efficient one-pot protocol.

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