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177995-52-7

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177995-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177995-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,9 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 177995-52:
(8*1)+(7*7)+(6*7)+(5*9)+(4*9)+(3*5)+(2*5)+(1*2)=207
207 % 10 = 7
So 177995-52-7 is a valid CAS Registry Number.

177995-52-7Upstream product

177995-52-7Downstream Products

177995-52-7Relevant articles and documents

Functionalization of non-activated C-H bonds in ketones and imines with HF/SbF5/CCl4

Thibaudeau, Sébastien,Martin-Mingot, Agnès,Jouannetaud, Marie-Paule,Jacquesy

, p. 6643 - 6649 (2007/10/03)

Reaction of cyclic ketones 2-6 and imines 15-17 in HF/SbF5 in presence of CCl4 yield hydroxy or fluoroderivatives, hydride abstraction occurring at a site located far from the functional group. Whereas ketones 2-5 yield only hydroxy derivatives, through cyclic carboxonium ion, imines 15, 16 N-protonated in the media conditions give only fluoroderivatives 18, 19, respectively, after quenching with HF-pyridine. Ring contraction is operative when starting from large membered ring ketones 24 and 25, and imine 26, leading to a mixture of hydroxy or fluoro cyclohexanones and/or cycloheptanones.

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