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71939-43-0

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71939-43-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71939-43-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,3 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 71939-43:
(7*7)+(6*1)+(5*9)+(4*3)+(3*9)+(2*4)+(1*3)=150
150 % 10 = 0
So 71939-43-0 is a valid CAS Registry Number.

71939-43-0Upstream product

71939-43-0Downstream Products

71939-43-0Relevant articles and documents

Synthesis of (+)-obtusenyne

Mak, S.Y. Frankie,Curtis, Neil R.,Payne, Andrew N.,Congreve, Miles S.,Wildsmith, Andrew J.,Francis, Craig L.,Davies, John E.,Pascu, Sofia I.,Burton, Jonathan W.,Holmes, Andrew B.

experimental part, p. 2867 - 2885 (2009/06/17)

An enantioselective synthesis of the halogenated medium-ring ether natural product (+)-obtusenyne is reported which uses the ring expansion of a seven-membered ketene acetal by means of a Claisen rearrangement to construct the core nine-membered oxygen he

A synthesis of (+)-obtusenyne

Frankie Mak,Curtis, Neil R.,Payne, Andrew N.,Congreve, Miles S.,Francis, Craig L.,Burton, Jonathan W.,Holmes, Andrew B.

, p. 3199 - 3201 (2007/10/03)

A synthesis of the halogenated medium-ring ether natural product (+)-obtusenyne is reported utilizing a Claisen rearrangement and an intramolecular hydrosilation as key steps. Georg Thieme Verlag Stuttgart.

Total synthesis of (+)-obtusenyne

Fujiwara, Kenshu,Awakura, Daisuke,Tsunashima, Misa,Nakamura, Akira,Honma, Teruki,Murai, Akio

, p. 2616 - 2617 (2007/10/03)

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