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66920-03-4

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66920-03-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66920-03-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,9,2 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 66920-03:
(7*6)+(6*6)+(5*9)+(4*2)+(3*0)+(2*0)+(1*3)=134
134 % 10 = 4
So 66920-03-4 is a valid CAS Registry Number.

66920-03-4Relevant articles and documents

From carboxylic acids to the trifluoromethyl group using BrF3

Cohen, Or,Mishani, Eyal,Rozen, Shlomo

experimental part, p. 3579 - 3582 (2010/07/04)

Organic trifluoromethyl derivatives were made from aromatic and aliphatic carboxylic acids by transforming them first into the corresponding dithioesters followed by reaction with bromine trifluoride under mild conditions (0 °C, 2 min).

A Novel Method for Converting Aromatic Acids into Trifluoromethyl Derivatives using BrF3

Rozen, Shlomo,Mishani, Eyal

, p. 2081 - 2082 (2007/10/02)

Aryltrifluoromethyl derivatives are obtained in good yields from the corresponding aryl carboxylic acids by reacting their dithionic esters with BrF3 under very mild conditions.

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