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53307-81-6

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53307-81-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53307-81-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,3,0 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 53307-81:
(7*5)+(6*3)+(5*3)+(4*0)+(3*7)+(2*8)+(1*1)=106
106 % 10 = 6
So 53307-81-6 is a valid CAS Registry Number.

53307-81-6Downstream Products

53307-81-6Relevant articles and documents

ACYLATION OF 2,7-DIMETHOXYNAPHTHALENE

Gorelik, A. M.,Reznichenko, A. V.,Andronova, N. A.,Luk'yanets E. A.

, p. 183 - 189 (2007/10/02)

During the acylation of 2,7-dimethoxynaphthalene with acetyl chloride in the presence of boron trifluoride etherate 1-acetyl-2,7-dimethoxynaphthalene is formed.In polyphosphoric acid the main product is its 3-isomer, whereas in nitrobenzene and dichloroethane in the presence of aluminium chloride a mixture of both compounds is formed.Further acetylation of these ketones leads to 1,8- and 1,6-diacetyl-2,7-dimethoxynaphthalene respectively.The results are explained by the instability of 1-acetyl-2,7-dimethoxynaphthalene in the presence of strong protic acids.

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