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170651-17-9

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170651-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170651-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,6,5 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 170651-17:
(8*1)+(7*7)+(6*0)+(5*6)+(4*5)+(3*1)+(2*1)+(1*7)=119
119 % 10 = 9
So 170651-17-9 is a valid CAS Registry Number.

170651-17-9Relevant articles and documents

Gold-Catalyzed Hydrofluorination of Internal Alkynes Using Aqueous HF

Gauthier, Rapha?l,Mamone, Marius,Paquin, Jean-Fran?ois

, p. 9024 - 9027 (2019)

The gold-catalyzed hydrofluorination reaction of internal alkynes using hydrofluoric acid is reported. Notably, those conditions use one of the most economical sources of HF and are free of additional additives. Both symmetrical and unsymmetrical internal alkynes can be utilized, and the use of alkynes bearing a fluorinated group at the propargylic position as substrates allowed for a regioselective hydrofluorination reaction.

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