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7335-77-5

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7335-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7335-77-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,3 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7335-77:
(6*7)+(5*3)+(4*3)+(3*5)+(2*7)+(1*7)=105
105 % 10 = 5
So 7335-77-5 is a valid CAS Registry Number.

7335-77-5Relevant articles and documents

Regioselective Addition of Grignard Reagents to 3-Methoxy- and 3-Nitrophthalic Anhydride

Braun, Manfred,Veith, Reiner,Moll, Gerard

, p. 1058 - 1070 (2007/10/02)

The regioselectivity in the addition of the grignard reagents 5a and 6a to the anhydrides 1 and 2 is determined by the solvent system: in a highly selective manner (3:97), the meta carbonyl group is attacked in tetrahydrofuran/tetramethylethylenediamine, while predominant, but relatively unselective (maximum 78:22) addition to the ortho carbonyl group is observed in diethyl ether.The influence of the solvent system on the regioselectivity is discussed.The LUMO-coefficients of the carbonyl carbon atoms in 1 and 2 were calculated.

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