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82158-50-7

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82158-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82158-50-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,1,5 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 82158-50:
(7*8)+(6*2)+(5*1)+(4*5)+(3*8)+(2*5)+(1*0)=127
127 % 10 = 7
So 82158-50-7 is a valid CAS Registry Number.

82158-50-7Relevant articles and documents

2-aroyl benzofuran derivative or 2-aroyl naphthofuran derivative and synthesis method thereof

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Paragraph 0142-0152, (2019/11/20)

The invention relates to a 2-aroyl benzofuran derivative or a 2-aroyl naphthofuran derivative and a synthesis method thereof. The compound has a structure shown in the following description, wherein Ris methoxyl, methyl, hydrogen, chlorine and nitryl. The

Syntheses of 2-Aroyl Benzofurans through Cascade Annulation on Arynes

Gouthami, Pashikanti,Chavan, Lahu N.,Chegondi, Rambabu,Chandrasekhar, Srivari

, p. 3325 - 3332 (2018/03/25)

The highly efficient and expedient route for the syntheses of 2-aroyl benzofurans has been developed via the cascade [2+2] followed by a [4+1] annulation on arynes. The overall transformation proceeded through the formation of ortho-quinone methide by the

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