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129889-18-5

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129889-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129889-18-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,8,8 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 129889-18:
(8*1)+(7*2)+(6*9)+(5*8)+(4*8)+(3*9)+(2*1)+(1*8)=185
185 % 10 = 5
So 129889-18-5 is a valid CAS Registry Number.

129889-18-5Downstream Products

129889-18-5Relevant articles and documents

Synthesis of bergenin-type C-glucosylarenes

Frick, Wendelin,Schmidt, Richard R.

, p. 101 - 107 (2007/10/02)

Reaction of 1,2,3-trimethoxybenzene with 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl trifluoroacetate (5) in the presence of BF3*OEt2 afforded the 4-β-C-glycosylarene 6.Hydrogenolysis of 6, then O-methoxycarbonylation, and bromination gave 1-bromo-2,3,4-tri

The First Direct Method for C-Glucopyranosyl Derivatization of 2,3,4,6-Tetra-O-benzyl-D-glucopyranose

Allevi, Pietro,Anastasia, Mario,Ciuffreda, Pierangela,Fiecchi, Alberto,Scala, Antonio

, p. 1245 - 1246 (2007/10/02)

Commercially available 2,3,4,6-tetra-O-benzyl-D-glucopyranose, activated by trifluoroacetic anhydride reacts, in the presence of Lewis acids, with various silyl enol ethers or with allylsilane to yield C-D-glucopyranosyl derivatives of the α-configuration

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