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76670-23-0

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76670-23-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76670-23-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,6,7 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 76670-23:
(7*7)+(6*6)+(5*6)+(4*7)+(3*0)+(2*2)+(1*3)=150
150 % 10 = 0
So 76670-23-0 is a valid CAS Registry Number.

76670-23-0Relevant articles and documents

Formation and Thermal Reaction of O-(N-Acetylbenzimidoyl)benzamidoxime: Comparison with the Formation of 3,5-Disubstituted 1,2,4-Oxadiazoles from O-Acetylarylamidoximes and O-Aroylacetamidoximes

Ooi, Ngan Sim,Wilson, David A.

, p. 1792 - 1799 (2007/10/02)

Salts of O-(benzimidoyl)benzamidoxime have been obtained by the action of N-chloro- or N-bromo-succinimide, or the halogens, on benzamidoxime.Acetylation of the free base gave the title compound, which underwent a thermal cyclisation, with loss of acetamide, to give 3,5-diphenyl-1,2,4-oxadiazole.The mechanism of the reaction, in diphenyl ether, closely paralleled the thermal cyclisation of O-acetylarylamidoximes and O-aroylacetamidoximes, and is thought to involve a polar cyclisation step followed by rate-determining proton transfer. 13C N.m.r. spectra for 32 oxime, amidoxime, O-acetylamidoxime, 5-methyl-1,2,4-oxadiazol-3-yl, and 3-methyl-1,2,4-oxadiazol-5-yl groups on the phenyl ring are calculated.

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