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171897-85-1

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171897-85-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 171897-85-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,8,9 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 171897-85:
(8*1)+(7*7)+(6*1)+(5*8)+(4*9)+(3*7)+(2*8)+(1*5)=181
181 % 10 = 1
So 171897-85-1 is a valid CAS Registry Number.

171897-85-1Downstream Products

171897-85-1Relevant articles and documents

Synthesis of Trimethyl α-Keto Trithioorthoesters and Dimethyl α-Keto Dithioacetals by Reaction of Esters with Tris(methylthio)methyllithium

Barbero, Margherita,Cadamuro, Silvano,Degani, Iacopo,Dughera, Stefano,Fochi, Rita

, p. 6017 - 6024 (1995)

A complete study has been made of the reaction of tris(methylthio)methyllithium with aromatic, heteroaromatic, and aliphatic esters.It is a one-pot reaction that despite its complexity, and depending on the reagent ratios, the reaction conditions, and the possible use of additional reagents (N-(methylthio)phthalimide or BuLi), can supply easily, in excellent and reproducible yields, the trimethyl α-keto trithioorthoesters 3 or, alternatively, the dimethyl α-keto dithioacetals 4.The reaction mechanism has been elucidated.

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