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210978-95-3

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210978-95-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 210978-95-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,9,7 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 210978-95:
(8*2)+(7*1)+(6*0)+(5*9)+(4*7)+(3*8)+(2*9)+(1*5)=143
143 % 10 = 3
So 210978-95-3 is a valid CAS Registry Number.

210978-95-3Downstream Products

210978-95-3Relevant articles and documents

Anionic [4+2] cycloaddition strategy to linear furocoumarins: Synthesis of 8 methoxypsoralen and its isoster

Mal, Dipakranjan,Bandhyopadhyay, Mousumi,Datta,Murty, Kadiyala V. S. N.

, p. 7525 - 7538 (2007/10/03)

The surfoxide esters 14 and 20d are successfully annulated with bicyclic enone 8 in the presence of (t)BuOLi to provide the pentacyclic ketones 9a and 21a respectively in good yields (≤70%). Flash vacuum pyrolysis of O-methyl derivatives 9b and 21b at - 5000 C/. 1 mm provide furoindacenones 16b and 22b respectively, which in turn are convertible to furocoumarins 1 and 3.

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