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222025-84-5

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222025-84-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 222025-84-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,0,2 and 5 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 222025-84:
(8*2)+(7*2)+(6*2)+(5*0)+(4*2)+(3*5)+(2*8)+(1*4)=85
85 % 10 = 5
So 222025-84-5 is a valid CAS Registry Number.

222025-84-5Relevant articles and documents

Fluorophenyl bilirubins: Synthesis and stereochemistry

Brower,Lightner

, p. 1527 - 1546 (2001)

Analogs of bilirubin with vinyl groups replaced by symmetrically-disposed o-fluorophenyls (1, bis-exo, and 2, bis-endo) were synthesized and characterized spectroscopically. Their 1H NMR spectra and NOE data are consistent with an intramolecularly hydrogen-bonded ridge-tile conformation where each propionic acid group embraces an opposing dipyrrinone. Like bilirubin, 1 and 2 exhibit negative chirality induced circular dichroism (ICD) Cotton effects in chloroform containing quinine. Unlike bilirubin, however, in aqueous buffer containing human serum albumin, 2 exhibits a negative exciton chirality ICD, whereas that of 1 is positive.

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