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97723-86-9

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97723-86-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97723-86-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,7,2 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 97723-86:
(7*9)+(6*7)+(5*7)+(4*2)+(3*3)+(2*8)+(1*6)=179
179 % 10 = 9
So 97723-86-9 is a valid CAS Registry Number.

97723-86-9Relevant articles and documents

Fe-catalyzed thioesterification of carboxylic esters

Magens, Silja,Plietker, Bernd

supporting information; experimental part, p. 8807 - 8809 (2011/09/16)

Second nature: Starting from shelf-stable aryl esters and thiols, a variety of carboxylic acid esters were transformed into the corresponding thioesters with no racemization of labile stereocenters (see scheme). The method was successfully applied in a native chemical-ligation-type peptide formation, which suggests that the thiol may act as a co-catalyst for future 1,2-additions of pronucleophiles to carboxylic esters.

A New and Efficient Method for the Preparation of S-Phenyl Carbothioates via Mixed Anhydrides Using Active Titanium(IV) Salts

Mukaiyama, Teruaki,Miyashita, Mitsutomo,Shiina,, Isamu

, p. 1747 - 1750 (2007/10/02)

In the presence of a catalytic amount of titanium(IV) salt, various S-phenyl carbothioates are prepared in excallent yields by the reaction of nearly equimolar amounts of silyl derivatives of carboxylic acids and benzenethiols with p-trifluoromethylbenzoic anhydride.

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