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91969-75-4

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91969-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91969-75-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,6 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91969-75:
(7*9)+(6*1)+(5*9)+(4*6)+(3*9)+(2*7)+(1*5)=184
184 % 10 = 4
So 91969-75-4 is a valid CAS Registry Number.

91969-75-4Relevant academic research and scientific papers

Cationic cyclization of 2-alkenyl-1,3-dithiolanes: Diastereoselective synthesis of trans-decalins

Goncalves, Sylvie,Santoro, Stefano,Nicolas, Marc,Wagner, Alain,Maillos, Philippe,Himo, Fahmi,Baati, Rachid

experimental part, p. 3274 - 3285 (2011/06/25)

An unprecedented and highly diastereoselective 6-endo-trig cyclization of 2-alkenyl-1,3-dithiolanes has been developed yielding trans-decalins, an important scaffold present in numerous di- and triterpenes. The novelty of this 6-endo-trig cyclization stan

Investigation of Mn(III)-based oxidative free radical cyclization reactions toward the synthesis of triptolide: The effects of lanthanide triflates and substituents on stereoselectivity

Yang, Dan,Ye, Xiang-Yang,Xu, Ming,Pang, Kwan-Wah,Cheung, Kung-Kai

, p. 1658 - 1663 (2007/10/03)

Mn(III)-mediated oxidative free radical cyclization reactions are useful for construction of polycyclic compounds. In the total synthesis of triptolide (3) and its related compounds, construction of tricyclic skeletons 4 and 5 was achieved by the Mn(OAc)

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