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81056-29-3

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81056-29-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81056-29-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,5 and 6 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81056-29:
(7*8)+(6*1)+(5*0)+(4*5)+(3*6)+(2*2)+(1*9)=113
113 % 10 = 3
So 81056-29-3 is a valid CAS Registry Number.

81056-29-3Downstream Products

81056-29-3Relevant articles and documents

Electrochemical Oxidation, VII. Synthesis and Structure of 7-tert-Butyl-2-methylbenzoxazoles

Dreher, Eberhard-Ludwig,Bracht, Juergen,El-Mobayed, Medhat,Huetter, Peter,Winter, Werner,Rieker, Anton

, p. 288 - 308 (2007/10/02)

Anodic oxidation of 15 tert-butylphenols 1a - o in absolute acetonitrile or acetonitrile/perchloric acid leads to the corresponding 7-tert-butyl-2-methylbenzoxazoles 3a - o.The proof of the structure was achieved by independent synthesis of 3k, and by 13C NMR spectroscopy as well as by X-ray analysis of 7-tert-butyl-2-methyl-5-benzoxazolecarbaldehyde (3j).The influence of the supporting electrolyte on the formation of the oxidation products is discussed.

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