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144951-17-7

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144951-17-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144951-17-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,9,5 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 144951-17:
(8*1)+(7*4)+(6*4)+(5*9)+(4*5)+(3*1)+(2*1)+(1*7)=137
137 % 10 = 7
So 144951-17-7 is a valid CAS Registry Number.

144951-17-7Downstream Products

144951-17-7Relevant articles and documents

Cycloaddition behavior of 3,4-diazacyclopentadienone dioxides toward bicyclo[2.2.1]heptadiene derivatives. X-ray analysis of the cycloadduct and reaction pathway

Eto,Harano,Yoshitake,Hisano

, p. 1557 - 1564 (1993)

The cycloaddition behavior of 2,5-disubstituted 3,4- diazacyclopentadienone dioxide 1a-c toward epoxynaphthalene (2a) and norbornadiene (2b) was investigated. The structures of the products were determined on the basis of the 1H- and 13C-nmr spectral data and the X- ray analysis data. The stereospecific formation of the endo-exo 1,3-dipolar cycloadducts from 2a indicates that the cycloadduct resulted from the direct 1,3-dipolar cycloaddition. The cycloaddition behavior of 1 toward 2 is discussed on the basis of the PM3-calculated transition-state structures.

CYCLOADDITION REACTION OF 4-OXO-4H-PYRAZOLE 1,2-DIOXIDES WITH EPOXYNAPHTHALENE. X-RAY ANALYSIS OF THE CYCLOADDUCT AND SOME COMMENTS ON CYCLOADDITION BEHAVIOR.

Harano, Kazunobu,Yoshitake, Yasuyuki,Eto, Masashi,Hisano, Takuzo

, p. 1707 - 1710 (2007/10/02)

The crystal structure of the cycloadduct of 2,5-bis(methoxycarbonyl)-4-exo-4H-pyrazole 1,2-dioxide with epoxynaphthalene was elucidated.The result indicates that the cycloadduct resulted from the direct 1,3-dipolar cycloaddition.

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