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52458-00-1

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52458-00-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52458-00-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,4,5 and 8 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 52458-00:
(7*5)+(6*2)+(5*4)+(4*5)+(3*8)+(2*0)+(1*0)=111
111 % 10 = 1
So 52458-00-1 is a valid CAS Registry Number.

52458-00-1Relevant articles and documents

Gromachevskaya,Pushkareva,Bespalov,Strelkov

, p. 1223 - 1227 (2018/10/23)

4H-3,1-BENZOXAZINES. 2. SYNTHESIS OF 2,4-SUBSTITUTED 1,2-DIHYDRO-4H-3,1-BENZOXAZINES

Gromachevskaya, E.V.,Kul'nevich, V.G.,Kosulina, T.P.,Pustovarov, V.S.

, p. 692 - 697 (2007/10/02)

The reactions of o-aminophenylcarbinols with carbonyl compounds have been studied.Optimum conditions have been developed for the synthesis of 2-(5-X-2-furyl)-1,2-dihydro-4H-3,1-benzoxazines.It was found that 2,2-disubstituted 1,2-dihydro-4H-3,1-benzoxazines are unstable and are converted upon heating in the presence of acylating agents to 4H-3,1-benzoxazines.

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