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421-16-9

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421-16-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 421-16-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,2 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 421-16:
(5*4)+(4*2)+(3*1)+(2*1)+(1*6)=39
39 % 10 = 9
So 421-16-9 is a valid CAS Registry Number.

421-16-9Downstream Products

421-16-9Relevant articles and documents

METHOD OF PRODUCING FLUORINE-CONTAINING SULFIDE COMPOUNDS

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Paragraph 0028; 0029, (2021/02/19)

The present invention aims to provide a method by which fluorine-containing sulfide compounds, particularly sulfide compounds that contain hydrogen and fluorine, can be produced in a simple, low-cost and industrial manner. Provided is a method of producing a fluorine-containing sulfide compound represented by the following formula (2): [in-line-formulae](F)n-A3-S-A4-(F)m??(2)[/in-line-formulae] (wherein A3 and A4 are independently an optionally substituted hydrocarbyl group with a carbon number of 1 to 3; n and m represent the numbers of fluorine atoms binding to A3 and A4, with n+m=1 to 13 being satisfied), comprising reacting a chlorine-containing sulfide compound represented by the following formula (1): [in-line-formulae](Cl)n-A1-S-A2-(Cl)m??(1)[/in-line-formulae] (wherein A1 and A2 are independently an optionally substituted hydrocarbyl group with a carbon number of 1 to 3; n and m represent the numbers of chlorine atoms binding to A1 and A2, with n+m=1 to 13 being satisfied) and a fluorinating agent.

A new synthesis of trifluoromethanethiolates - Characterization and properties of tetramethylammonium, cesium and di(benzo-15-crown-5)cesium trifluoromethanethiolates

Tyrra, Wieland,Naumann, Dieter,Hoge, Berthold,Yagupolskii, Yurii L.

, p. 101 - 107 (2007/10/03)

[NMe4]SCF3, CsSCF3 and [(B-15-C-5)2Cs]SCF3 (B-15-C-5: benzo-15-crown-5) are formed from reactions of the corresponding fluorides, trimethyl(trifluoromethyl)silane, Me3SiCF3, and elemental sulfur in glyme or THF. All compounds are colorless to pale ochre solids decomposing significantly above ambient temperature. Excellent agreement between experimental and theoretical vibrational frequencies, calculated at the B3PW91 level of theory, impressively confirms the salt-like nature of [NMe4]SCF3. The properties of the title compounds as nucleophilic SCF3 transfer reagents were checked with a variety of organic, organometallic and inorganic compounds.

Process for the preparation of perhaloalkylthioethers

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, (2008/06/13)

The present invention relates to a process for the preparation of perhaloalkylthioethers by bringing a perhaloalkyl halide, preferably a bromide or an iodide, into contact with a disulphide in the presence of zinc and of sulphur dioxide or of a dithionite or of a hydroxymethanesulphinate or of a formate anion and sulphur dioxide.

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