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90222-67-6

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90222-67-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90222-67-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,2 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90222-67:
(7*9)+(6*0)+(5*2)+(4*2)+(3*2)+(2*6)+(1*7)=106
106 % 10 = 6
So 90222-67-6 is a valid CAS Registry Number.

90222-67-6Relevant articles and documents

Nitro-group-directed selective dealkylation

Ji, Xiujie,Cheng, Bowen,Song, Jun,Liu, Chao,Wang, Yufei

, p. 2053 - 2057 (2009)

Nitro-substituted phenolic ethers were successfully selectively dealkylated. The directing effect of the nitro group is supported by the excellent regioselectivities and good yields. These reactions demonstrate that the complexation of AlCl3 with the phenolic nitro group is stronger than with the phenolic ether alone. The mechanism for the selective dealkylation directed by the nitro group is proposed.

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