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Bis(pentafluorphenylsulfanyl)essigsaeure is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

156664-31-2

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156664-31-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156664-31-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,6 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156664-31:
(8*1)+(7*5)+(6*6)+(5*6)+(4*6)+(3*4)+(2*3)+(1*1)=152
152 % 10 = 2
So 156664-31-2 is a valid CAS Registry Number.

156664-31-2Relevant academic research and scientific papers

Perfluororganochalkogeno-ketene. III. Bis(pentafluorphenylsulfanyl)keten (C6F5S)2C=C=O; Synthesen und Charakterisierung

Haas, Alois,Praas, Hans-Walter,Radau, Godehard

, p. 257 - 260 (2007/10/02)

Bis(pentafluorophenylsulfanyl)ketene (1) may be prepared in good yield by the dehydration of the corresponding substituted acetic acid (C6F5S)2CHC(O)OH (4b) with P4O10 or by the reaction of C6F5SCl with Ag2CCO.The starting material 4b is prepared from CH3C(OCH2CH3)3 and C6F5SCl.Acidolysis of the C6F5S-substituted orthoesters 2 provided the ethyl esters CH3-n(SC6F5)nC(O)OCH2CH3 (3) and acetic acids CH3-n(SC6F5)nC(O)OH (4).

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