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757998-11-1

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757998-11-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 757998-11-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,5,7,9,9 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 757998-11:
(8*7)+(7*5)+(6*7)+(5*9)+(4*9)+(3*8)+(2*1)+(1*1)=241
241 % 10 = 1
So 757998-11-1 is a valid CAS Registry Number.

757998-11-1Downstream Products

757998-11-1Relevant articles and documents

ROM-RCM of cycloalkene-yne

Kitamura, Tsuyoshi,Kuzuba, Yuichi,Sato, Yoshihiro,Wakamatsu, Hideaki,Fujita, Reiko,Mori, Miwako

, p. 7375 - 7389 (2007/10/03)

Ring-opening metathesis and ring-closing metathesis (ROM-RCM) of cycloalkene-yne was demonstrated using a first- or second-generation ruthenium complex. When cycloalkenes bearing the alkyne part at the C-3 position were reacted with a first-generation ruthenium-carbene complex under an atmosphere of ethylene, ROM-RCM proceeded smoothly to give skeletal reorganized products in good yields. In this reaction, cycloalkene-ynes having terminal alkyne were suitable. On the other hand, when cycloalkenes bearing the alkyne part at the C-1 position were treated with a second-generation ruthenium-carbene complex, ROM-RCM proceeded smoothly to give bicyclic compounds and/or dimeric compounds in good yields.

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