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537686-98-9

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537686-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 537686-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,3,7,6,8 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 537686-98:
(8*5)+(7*3)+(6*7)+(5*6)+(4*8)+(3*6)+(2*9)+(1*8)=209
209 % 10 = 9
So 537686-98-9 is a valid CAS Registry Number.

537686-98-9Relevant articles and documents

New Benzo[b]xanthones from Diels-Alder Reactions of Chromone-3- carboxaldehydes with ortho-Benzoquinodimethanes

Sandulache, Angela,Silva, Artur M. S.,Cavaleiro, Jose A. S.

, p. 551 - 563 (2003)

New benzo[b]xanthone derivatives, having substituents in the A and D rings, were prepared from cycloaddition reactions of chromone-3-carboxaldehydes with ortho-benzoquinodimethanes, generated in situ from 1,3-dihydrobenzo[c]thiophene 2,2-dioxide, followed

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