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1239983-57-3

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1239983-57-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1239983-57-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,9,9,8 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1239983-57:
(9*1)+(8*2)+(7*3)+(6*9)+(5*9)+(4*8)+(3*3)+(2*5)+(1*7)=203
203 % 10 = 3
So 1239983-57-3 is a valid CAS Registry Number.

1239983-57-3Downstream Products

1239983-57-3Relevant articles and documents

Magnetically recoverable osmium catalysts for dihydroxylation of olefins

Fujita, Ken-Ichi,Umeki, Satoshi,Yamazaki, Manabu,Ainoya, Taku,Tsuchimoto, Teruhisa,Yasuda, Hiroyuki

supporting information; experimental part, p. 3137 - 3140 (2011/06/28)

We prepared magnetically recoverable osmium catalysts by use of magnetite, quaternary ammonium salts, and potassium osmate(VI), and applied them to the dihydroxylation of olefins. By employing 2 mol% of the magnetic osmium catalyst, the dihydroxylation reaction proceeded smoothly to provide the corresponding vicinal diol in a good chemical yield. The osmium catalyst was readily recovered by use of an external magnet, and was reused repeatedly.

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