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137131-14-7

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137131-14-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137131-14-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,3 and 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 137131-14:
(8*1)+(7*3)+(6*7)+(5*1)+(4*3)+(3*1)+(2*1)+(1*4)=97
97 % 10 = 7
So 137131-14-7 is a valid CAS Registry Number.

137131-14-7Downstream Products

137131-14-7Relevant articles and documents

A convenient preparation of 3,3,3-trifluoro-1-propynylamines and their Lewis acid catalyzed reaction with carbonyl compounds leading to (Z)-α-(trifluoromethyl)-α,β-unsaturated amides

Mantani,Shiomi,Konno,Ishihara,Yamanaka

, p. 3442 - 3448 (2001)

N,N-Dialkyl(3,3,3-trifluoro-1-propynyl)amines were readily prepared by a three-step procedure starting from commercially available 2,2,3,3,3-pentafluoropropanol. These fluorinated alkynylamines reacted smoothly with a variety of aldehydes or ketones in the presence of a catalytic amount of Lewis acid and molecular sieves 4A at ambient temperature to produce the corresponding α(trifluoromethyl)-α,β-unsaturated amides in good to excellent yields with high Z-stereoselectivity.

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