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158388-57-9

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158388-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158388-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,3,8 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 158388-57:
(8*1)+(7*5)+(6*8)+(5*3)+(4*8)+(3*8)+(2*5)+(1*7)=179
179 % 10 = 9
So 158388-57-9 is a valid CAS Registry Number.

158388-57-9Downstream Products

158388-57-9Relevant articles and documents

Thermocontrolled benzylimine-benzaldimine rearrangement over Nafion-H catalysts for efficient entry into α-trifluoromethylbenzylamines

Prakash, G.K. Surya,Glinton, Kevin E.,Panja, Chiradeep,Gurung, Laxman,Battamack, Patrice T.,T?r?k, Béla,Mathew, Thomas,Olah, George A.

experimental part, p. 607 - 611 (2012/02/13)

Nafion-H and Nafion SAC-13 are efficient solid Br?nsted acid catalysts for the preparation of trifluoromethyl ketimines from benzylamines and trifluoromethylated ketones in high yields. A finely tuned benzylimine- benzaldimine rearrangement by facile 1,3-hydrogen shift has been achieved for the formation of fluorinated benzaldimines in high yields by careful optimization of reaction conditions including attempts under microwave conditions and a flow system. These α-trifluoromethylated benzaldimines are efficient precursors for pharmaceutically important α- trifluoromethylated benzylamines, accessed through their direct acid hydrolysis.

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