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1,2,3,4-tetrahydro-6-methoxy-1-(4-methoxyphenyl)-4-oxonaphthalene-2-carboxylic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81649-59-4

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81649-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81649-59-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,4 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81649-59:
(7*8)+(6*1)+(5*6)+(4*4)+(3*9)+(2*5)+(1*9)=154
154 % 10 = 4
So 81649-59-4 is a valid CAS Registry Number.

81649-59-4Relevant academic research and scientific papers

Total Synthesis of ( +/-)-Picropodophillone

Murphy, William S.,Wattanasin, Sompong

, p. 271 - 276 (1982)

Following model studies, the synthesis of (+/-)-picropodophillone was completed by first cyclopropanating the appropriate chalcone (11) with ethoxycarbonyl dimethylsulphonium methylide.Treatment of the resulting cyclopropyl ketone with stannic chloride in

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