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128600-23-7

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128600-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128600-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,0 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128600-23:
(8*1)+(7*2)+(6*8)+(5*6)+(4*0)+(3*0)+(2*2)+(1*3)=107
107 % 10 = 7
So 128600-23-7 is a valid CAS Registry Number.

128600-23-7Upstream product

128600-23-7Downstream Products

128600-23-7Relevant articles and documents

Formation and decomposition of N-alkylnaphthalimides: Experimental evidences and ab initio description of the reaction pathways

De Barros, Teresa Cristina,Filho, Pedro Berci,Loos, Michel,Politi, Mario Jose,Chaimovich, Hernan,Cuccovia, Iolanda Midea

, p. 385 - 397 (2011)

The kinetics of hydrolysis of 1,8-N-butyl-naphthalimide (1,8-NBN) to 1,8-N-butyl-naphthalamide (1,8-NBAmide) and of 2,3-N-butyl-naphthalimide (2,3-NBN) to 2,3-N-butyl-naphthalamide (2,3-NBAmide), as well as the formation of the respective anhydrides from the amides were investigated in a wide acidity range. 1,8-NBN equilibrates with 1,8-NBAmide in mild alkali. Under the same conditions 2,3-NBN quantitatively yields 2,3-NBAmide. Over a wide range of acidities the reactions of the 1,8- and 2,3-N-butyl-naphthalamides (or imides) yield similar products but with widely different rates and at distinct pH's. Anhydride formation in acid was demonstrated for 1,8-NBAmide. The reactions mechanisms were rationalized in the manifold pathways of ab initio calculations. The differences in rates and pH ranges in the reactions of the 1,8- and 2,3-N-butyl-naphthalamides were attributed to differences in the stability of the tetrahedral intermediates in alkali as well as the relative stabilities of the five and six-membered ring intermediates. The rate of carboxylic acid assisted 1,8-N-Butyl-naphthalamide hydrolysis is one of the largest described for amide hydrolysis models. Copyright

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