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191990-34-8

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191990-34-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191990-34-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,9 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 191990-34:
(8*1)+(7*9)+(6*1)+(5*9)+(4*9)+(3*0)+(2*3)+(1*4)=168
168 % 10 = 8
So 191990-34-8 is a valid CAS Registry Number.

191990-34-8Downstream Products

191990-34-8Relevant articles and documents

Cholesterol modification of (bio)polymers using UV-vis traceable chemistry in aqueous solutions

Rasmussen, Kasper F.,Smith, Anton A.A.,Ruiz-Sanchis, Pau,Edlund, Katrine,Zelikin, Alexander N.

, p. 33 - 44 (2014)

Cholesterol modification of synthetic and biological polymers is achieved using of thiocholesterol (TC) and thiol-disulfide exchange. TC is reacted with Ellman's reagent to produce a mixed disulfide (TC-ER) which is activated towards thiol-disulfide exchange. TC-ER is used to obtain an inclusion complex with methyl-β-cyclodextrin, which is then employed to achieve cholesterol functionalization of a model peptide, synthetic polymers, and physical hydrogels based on poly(vinyl alcohol). It is anticipated that the established techniques will significantly broaden the use of cholesterol in bio- and nanotechnology and specifically biomedicine.

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