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473758-70-2

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473758-70-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 473758-70-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,3,7,5 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 473758-70:
(8*4)+(7*7)+(6*3)+(5*7)+(4*5)+(3*8)+(2*7)+(1*0)=192
192 % 10 = 2
So 473758-70-2 is a valid CAS Registry Number.

473758-70-2Downstream Products

473758-70-2Relevant articles and documents

Synthesis of biotinylated retinoids for cross-linking and isolation of retinol binding proteins

Nesnas, Nasri,Rando, Robert R,Nakanishi, Koji

, p. 6577 - 6584 (2007/10/03)

The synthesis of (3R)-3-[Boc-Lys(biotinyl)-O]-11-cis-retinol bromoacetate and 3-[Boc-Lys(biotinyl)-O]-all trans-retinol chloroacetate is described. These biotinylated retinoids are instrumental in labeling the retinol binding proteins (RBPs) via a nucleophilic displacement of the haloacetate by a residue in the binding site of the protein. The covalently linked biotin will allow for a facile isolation and purification of the protein on a streptavidin column thus rendering the protein ready for a tryptic digest followed by mass spectrometric analysis. The 11-cis retinoid was synthesized via metal reduction of an alkyne intermediate generated from a Horner-Wadsworth-Emmons (HWE) reaction whereas the all-trans was synthesized via two consecutive HWE couplings.

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