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4-hydroxy-2,3,3-trimethyl-7-phenyl-2,3-dihydrofurano[3,2-g]-4H-chromen-5-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

50402-96-5

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50402-96-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50402-96-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,4,0 and 2 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 50402-96:
(7*5)+(6*0)+(5*4)+(4*0)+(3*2)+(2*9)+(1*6)=85
85 % 10 = 5
So 50402-96-5 is a valid CAS Registry Number.

50402-96-5Downstream Products

50402-96-5Relevant academic research and scientific papers

Regioselective syntheses of 6-(1,1-dimethylallyl)- and 8-(3,3-dimethylallyl) chrysins

Daskiewicz, Jean-Baptiste,Bayet, Christine,Barron, Denis

, p. 3589 - 3595 (2007/10/03)

The first regioselective syntheses of 6-(1,1-dimethylallyl)- and 8-(3,3-dimethylallyl) chrysins have been designed. Claisen rearrangement of protected 5-O-(3,3-dimethylallyl) chrysin in N,N-diethylaniline at 200-217°C gave selective access to the 8-(3,3-dimethylallyl) isomer. Similar rearrangement in N,N-diethylbutylamine at 140-160°C, or in cycloheptane/Eu(fod)3 at 100°C, led to the formation of the 6-(1,1-dimethylallyl) isomer. Four different protecting groups for position 7 of chrysin have been compared, and found to follow the order of interest Bz>MOM>TBDPS>MEM.

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