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71641-59-3

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71641-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71641-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,4 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71641-59:
(7*7)+(6*1)+(5*6)+(4*4)+(3*1)+(2*5)+(1*9)=123
123 % 10 = 3
So 71641-59-3 is a valid CAS Registry Number.

71641-59-3Downstream Products

71641-59-3Relevant articles and documents

Aromatic Nitro group Displacement Reactions. Part 2. The Synthesis of Diarylamines and some Heteroaromatic Analogues.

Gorvin, John H.

, p. 1662 - 1681 (2007/10/02)

In dipolar aprotic solvents, activated aromatic nitro-groups can usually be displaced by anilines of enhanced N-acidity in the presence of the heavier alkali-metal carbonates.When catalysed by potassium t-butoxide, however, attack occurs preferentially at other reactive centers in the molecule, except where the nitro-group is highly activated.Some of the resulting diarylamines (the term is here expanded to include arylaminoxanthen-9-ones) are intermediates in the synthesis of heterocycles.

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