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75581-72-5

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75581-72-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75581-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,8 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 75581-72:
(7*7)+(6*5)+(5*5)+(4*8)+(3*1)+(2*7)+(1*2)=155
155 % 10 = 5
So 75581-72-5 is a valid CAS Registry Number.

75581-72-5Downstream Products

75581-72-5Relevant articles and documents

Diene synthesis with 2-pyrones and 2-pyridones. XXVII. Thermolysis of 1,4-cycloadducts of 2-pyrones with N-phenylmaleimide

Shusherina, N. P.,Nesterova, T. L.,Polyakova, O. V.

, p. 1111 - 1115 (2007/10/02)

It was shown for the first time that the thermolysis of 1,4-cycloadducts of 2-pyrones with N-phenylmaleimide gives either N-phenylimides of 1,2-dihydrophthalic acids or their dimers, depending on the temperature, the heating time, and the structure of the initial adducts.It was established that the N-phenylimides of 1,2-dihydrophthalic acid and 3-bromo-1,2-dihydrophthalic acid dimerize at 196 deg C by a diene synthesis mechanism.

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