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142071-45-2

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142071-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142071-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,7 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 142071-45:
(8*1)+(7*4)+(6*2)+(5*0)+(4*7)+(3*1)+(2*4)+(1*5)=92
92 % 10 = 2
So 142071-45-2 is a valid CAS Registry Number.

142071-45-2Downstream Products

142071-45-2Relevant articles and documents

ONE-POT SYNTHESIS OF SOME FUSED PYRAN-2-ONES

Kepe, Vladimir,Kocevar, Marijan,Polanc, Slovenko

, p. 1299 - 1306 (2007/10/02)

A one-pot synthesis of different fused pyran-2-ones starting from some less commonly used activated methylene compounds (cyclic lactones, a thiolactone and a lactam), one-carbon sources and N-acylglycines in acetic anhydride is described.

4-ETHOXYMETHYLENE-2-PHENYL-5(4H)-OXAZOLONE AS A SYNTHON FOR THE SYNTHESIS OF SOME 2H-PYRAN-2-ONES

Kepe, Vladimir,Kocevar, Marijan,Petric, Andrej,Polanc, Slovenko,Vercek, Bojan

, p. 843 - 849 (2007/10/02)

Treatment of 4-ethoxymethylene-2-phenyl-5(4H)-oxazolone with activated methylene compounds under acidic or basic conditions leads to 2H-pyran-2-ones and fused pyran-2-ones.On the other hand, methyl (3-benzoylamino-5-methoxycarbonyl-2-oxo-2H-pyran-6-yl)acetate (4) has also been prepared by a one-pot synthesis from dimethyl 1,3-acetone dicarboxylate, diethoxymethyl acetate, hippuric acid and acetic anhydride.

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