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70340-74-8

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70340-74-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70340-74-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,3,4 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 70340-74:
(7*7)+(6*0)+(5*3)+(4*4)+(3*0)+(2*7)+(1*4)=98
98 % 10 = 8
So 70340-74-8 is a valid CAS Registry Number.

70340-74-8Relevant articles and documents

CHEMISTRY OF 1,8-SUBSTITUTED NAPHTHALENES. XVIII. peri-HYDROXY- AND peri-ACYLOXYNAPHTHYL BENZYL KETONES UNDER THE CONDITIONS FOR THE SYNTHESIS OF ISOFLAVONES

Zhukovskaya, O. N.,Mezheritskii, V. V.,Pivovarenko, V. G.

, p. 2154 - 2158 (2007/10/02)

The reaction of 4-methoxy-8-hydroxy-1-naphthyl benzyl ketone with benzoyl and ethoxalyl chlorides of trifluoroacetic anhydride in pyridine leads to the formation of the peri-acyloxy-substituted enol acyloxy derivatives of this ketone, whereas the reaction

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