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175476-13-8

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175476-13-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 175476-13-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,4,7 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 175476-13:
(8*1)+(7*7)+(6*5)+(5*4)+(4*7)+(3*6)+(2*1)+(1*3)=158
158 % 10 = 8
So 175476-13-8 is a valid CAS Registry Number.

175476-13-8Relevant articles and documents

PREPARATION OF 1-HYDROXYXANTHEN-9(9H)-ONES AND 1-HYDROXYACRIDIN-9(10H)-ONES VIA CORRESPONDING 3,4-DIHYDRO-1,9(2H)-DIONES

Radl, Stanislav

, p. 2127 - 2136 (2007/10/03)

Target 10-cyclopropyl-7-fluoro-6-(4-methyl-1-piperazinyl)acridin-9(10H)-one (IVc) and 7-fluoro-1-hydroxy-6-(4-methyl-1-piperazinyl)-9H-xanthen-9-one (IVd) were obtained from corresponding difluoro derivatives IVa and IVb, respectively.These intermediates were synthesized via respective 3,4-dihydro-1,9(2H)-diones Va and Vb.Acridine derivative (10-cyclopropyl-6,7-difluoro-3,4-dihydro-1H-acridine-1,9(2H,10H)-dione, Va) was synthesized from 1-cyclopropyl-6,7-difluoroisatoic anhydride (XI) and xanthene derivative (6,7-difluoro-3,4-dihydro-1H-xanthen-1,9(2H)-dione, Vb) from cyclohexenone derivative VIb.Several unsuccessful attempts to prepare hydroxyacridone IVc and/or some useful intermediates of its synthesis are also described.

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