Cas 133117-62-1,mono(2-O-tosyl)heptakis(6-O-tert-butyldimethylsilyl)-β-cyclodextrin

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Check Digit Verification of cas no

The CAS Registry Mumber 133117-62-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,1 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 133117-62:
(8*1)+(7*3)+(6*3)+(5*1)+(4*1)+(3*7)+(2*6)+(1*2)=91
91 % 10 = 1
So 133117-62-1 is a valid CAS Registry Number.

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133117-62-1Relevant articles and documents

Efficient monomodification of the secondary hydroxy groups of β- cyclodextrin

Chiu, Sheng-Hsien,Myles, David C.

, p. 332 - 333 (1999)

Selective Functionalization and Flexible Coupling of Cyclodextrins at the Secondary Hydroxyl Face

Dienst, Erik van,Snellink, Bianca H. M.,Piekartz, Irma von,Gansey, Marcel H. B. Grote,Venema, Fokke,et al.

, p. 6537 - 6545 (2007/10/03)

Methods are described for the chemo- and regioselective monofunctionalization of the secondary hydroxyl face of cyclodextrins.Monofunctionalization takes place either by nucleophilic epoxide opening of mono(2A,3A-anhydro)heptakis(6-O

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133117-62-1