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52250-06-3

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52250-06-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52250-06-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,2,5 and 0 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 52250-06:
(7*5)+(6*2)+(5*2)+(4*5)+(3*0)+(2*0)+(1*6)=83
83 % 10 = 3
So 52250-06-3 is a valid CAS Registry Number.

52250-06-3Downstream Products

52250-06-3Relevant articles and documents

Oxidative rearrangement of pentaalkoxychalcones with phenyl-iodine(III) bis(trifluoroacetate) (PIFA): Synthesis of (±)-10-bromopterocarpin and (±)-pterocarpin

Miki, Yasuyoshi,Fujita, Rie,Matsushita, Ko-Ichi

, p. 2533 - 2536 (2007/10/03)

The oxidative rearrangement of pentaalkoxychalcones using the hypervalent iodine compound, phenyliodine(III) bis(trifluoroacetate) (PIFA), has been examined. Treatment of 2,2′-bis(benzyloxy)-4′-methoxy-4,5-methylenedioxychalcone with PIFA gives a rearrangement product in low yield, but 2,2′-bis(benzyloxy)-3-bromo-4′-methoxy-4,5-methylenedioxychalcone yields the rearrangement product, which leads to (±)-bromopterocarpin and (±)-pterocarpin.

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