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131166-78-4

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131166-78-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131166-78-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,6 and 6 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131166-78:
(8*1)+(7*3)+(6*1)+(5*1)+(4*6)+(3*6)+(2*7)+(1*8)=104
104 % 10 = 4
So 131166-78-4 is a valid CAS Registry Number.

131166-78-4Relevant articles and documents

Application of the hydrogenphosphonate approach in the synthesis of glycosyl phosphosugars linked through secondary hydroxyl groups

Nikolaev, Andrey V.,Ivanova, Irena A.,Shibaev, Vladimir N.,Kochetkov, Nikolay K.

, p. 65 - 78 (2007/10/02)

The hydrogenphosphonate approach has been used in syntheses of methyl α-D-mannopyranoside 2-, 3-, and 4-(α-D-mannopyranosyl phosphate), benzyl β-D-galactopyranoside 2-(α-D-mannopyranosyl phosphate), and methyl β-D-galactopyranoside 4-(α-D-mannopyranosyl phosphate).Condensation of 2,3,4,6-tetra-O-benzyl- or 2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl hydrogenphosphonate with suitable, partially acylated monohydroxy derivatives in the presence of Me3CCOCl, followed by oxidation of the resulting hydrogenphosphonate diesters with iodine, gave the O-protected phosphate diesters in yields of 67-87percent.Deprotection then gave the glycosyl phosphosugars.

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