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162843-28-9

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162843-28-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 162843-28-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,2,8,4 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 162843-28:
(8*1)+(7*6)+(6*2)+(5*8)+(4*4)+(3*3)+(2*2)+(1*8)=139
139 % 10 = 9
So 162843-28-9 is a valid CAS Registry Number.

162843-28-9Downstream Products

162843-28-9Relevant articles and documents

Preparation of O-Hydroxyethyl and O-Hydroxypropyl Derivatives of D-Glucose and 2-Acetamido-2-deoxy-D-glucose for Studies of Modified Hyaluronic Acid

Bjurling, Eva,Jansson, Per-Erik,Lindqvist, Bengt

, p. 589 - 595 (2007/10/02)

Some hydroxyethyl and hydroxypropyl derivatives of D-glucose and of 2-acetamido-2-deoxy-D-glucose have been sunthesized for use as reference substances for structural studies of hydroxyethylated and hydroxypropylated hyaluronic acid.Hydroxyethyl and hydroxypropyl substituents were introduced in the 2-O- or 3-O-position of D-glucose and in the 4-O- or 6-O-positions of 2-acetamido-2-deoxy-D-glucose by reaction of suitably protected sugars with either ethylene oxide or propylene oxide.For hydroxyethyl derivatives yields varied between 21 and 74percent and with a substantial portion of the doubly alkylated compounds.For hydroxypropyl derivatives yields varied between 15 and 80percent.Only trace amounts of the doubly alkylated compounds were found.The proportions of the respective derivatives were estimated using GLC-MS.All products were characterized by 1H and 13C NMR spectroscopy.

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