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18459-13-7

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18459-13-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18459-13-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,4,5 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18459-13:
(7*1)+(6*8)+(5*4)+(4*5)+(3*9)+(2*1)+(1*3)=127
127 % 10 = 7
So 18459-13-7 is a valid CAS Registry Number.

18459-13-7Relevant articles and documents

Practical syntheses of [13C]- and [14C]-labelled glucosphingolipids

Duffin, Gordon R.,Ellames, George J.,Hartmann, Sascha,Herbert, John M.,Smith, David I.

, p. 2237 - 2242 (2007/10/03)

Synthetic routes to [glucose-U-14C]-1-O-(β-D-glucopyranosyl)-N-stearoyl-D-erythro-sp hingosine 1b and to [glucose-13C6]-1-O-(β-D-glucopyranosyl)sphingosine ([glucose-13C6]glucopsychosine, 2b) are described. Whereas the protected ceramide precursor for lb was prepared using conventional methodology, two new strategies were developed in the course of the synthesis of 2b. Of these, one relies on keeping a protecting group in place at all times to avoid the handling difficulties associated with sphingosine 4, while the other generates a protected derivative (24) of sphingosine indirectly by means of a Mitsunobu inversion.

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