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662-23-7

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662-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 662-23-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,6 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 662-23:
(5*6)+(4*6)+(3*2)+(2*2)+(1*3)=67
67 % 10 = 7
So 662-23-7 is a valid CAS Registry Number.

662-23-7Relevant articles and documents

The synthesis of perfluoroamine using nitrogen trifluoride

Takagi, Toshiyuki,Tamura, Masanori,Shibakami, Motonari,Quan, Heng-Dao,Sekiya, Akira

, p. 15 - 17 (2007/10/03)

The reactions of nitrogen trifluoride (1) with hexafluoropropene (2) in the presence of cesium fluoride (CsF) gave 2- (3) and 1-heptafluoropropyldifluoroamine (4) in moderate yields. Tetrafluoroethylene (6) and octafluoro-2-butene (8) similarly reacted with 1 to give corresponding products.

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