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26458-42-4

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26458-42-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26458-42-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,4,5 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 26458-42:
(7*2)+(6*6)+(5*4)+(4*5)+(3*8)+(2*4)+(1*2)=124
124 % 10 = 4
So 26458-42-4 is a valid CAS Registry Number.

26458-42-4Downstream Products

26458-42-4Relevant articles and documents

On the Fate of Biliverdin-IIIα-dimethyl Ester Formed by Scrambling During Syntheses of Biliverdin-IXα-dimethyl Ester from Bilirubin

Krois, Daniel,Lehner, Harald

, p. 575 - 580 (2007/10/02)

In the preparations of biliverdin-IXα-dimethyl ester (2b) from bilirubin-IXα (1) the ratio of the XIIIα- and IIIα-isomers 3b and 4b, formed via intermolecular scrambling, should be unity.However, irrespective of the synthetic variant considered, the amount of 4b obtained usually is exceptionally low.This is partly ascribed to a consecutive reaction of 4b in acidic methanol affording the chiral diastereomeric bridged biliverdins 5(a and b) and 6(a and b), respectively. - Keywords: Biliverdin-IIIα; Bridged biliverdins; Bilatrienes

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