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1268252-32-9

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1268252-32-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1268252-32-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,8,2,5 and 2 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1268252-32:
(9*1)+(8*2)+(7*6)+(6*8)+(5*2)+(4*5)+(3*2)+(2*3)+(1*2)=159
159 % 10 = 9
So 1268252-32-9 is a valid CAS Registry Number.

1268252-32-9Upstream product

1268252-32-9Downstream Products

1268252-32-9Relevant articles and documents

Sulfate esters of morphine derivatives: Synthesis and characterization

Váradi, András,Gergely, András,Béni, Szabolcs,Jankovics, Péter,Noszál, Béla,Hosztafi, Sándor

, p. 65 - 72 (2011)

Sixteen 3-O- and 6-O-sulfate esters of morphine, codeine and some of their N-methyl quaternary derivatives were synthesized by means of sulfation with pyridine-SO3 complex and sulfuric acid/N,N′- dicyclohexylcarbodiimide. Complete 1H- and 13C-NMR assignments are given for each of the synthesized compounds based on one- and two-dimensional homo- and heteronuclear measurements. Comparative analysis of chiral properties by circular dichroism and optical rotatory dispersion revealed characteristic differences in the spectra due to changes in charge, polarity and intramolecular association by strong hydrogen bonds in aqueous solution. The synthesized sulfate esters are prospective peripheral analgesics lacking central side effects and are also useful as reference substances for various analytical studies involving sulfate ester metabolites.

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