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947769-20-2

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947769-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 947769-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,7,7,6 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 947769-20:
(8*9)+(7*4)+(6*7)+(5*7)+(4*6)+(3*9)+(2*2)+(1*0)=232
232 % 10 = 2
So 947769-20-2 is a valid CAS Registry Number.

947769-20-2Relevant academic research and scientific papers

Synthesis of the C3-C18 fragment of amphidinolides G and H

Petri, Andreas F.,Schneekloth Jr., John S.,Mandal, Amit K.,Crews, Craig M.

, p. 3001 - 3004 (2008/02/09)

A synthesis of an amphidinolides G and H C3-C18 subunits is reported. The C10-C18 segment 4 was prepared by a Negishi cross-coupling, whereas the synthesis of the C3-C9 fragment 5 employed an asymmetric cyanosilylation as the key step. The two segments were coupled by lithiation of iodide 4 and trapping of the anion with amide 5. The allylic epoxide moiety could be synthesized from the protected anti- mesylate 22.

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