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161859-44-5

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161859-44-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161859-44-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,8,5 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 161859-44:
(8*1)+(7*6)+(6*1)+(5*8)+(4*5)+(3*9)+(2*4)+(1*4)=155
155 % 10 = 5
So 161859-44-5 is a valid CAS Registry Number.

161859-44-5Downstream Products

161859-44-5Relevant articles and documents

Synthesis of heterocyclic platelet activating factor analogues

Zeidler, Juergen,Zimmermann, Werner

, p. 183 - 191 (1995)

The synthesis of heterocyclic analogues of the platelet activating factor is described.The preparation starts with acylating rac-tetrahydro-1,3-thiazine-4-carboxylic acid ethyl ester, with palmitoyl chloride to form the amide linkage.Following ester reduction, the phosphocholine part is introduced via 2-chloro-2-oxo-1,3,2-dioxaphospholane and subsequent ring opening with trimethylamine under pressure.Furthermore, the related L-thiazolidine analogue is prepared using the same procedure.In addition the sulfinyl and sulfonyl derivatives of this compound are obtained by oxidation with 3-chloro-perbenzoic acid.From one sulfinyl intermediate the diastereomeres are separated and their conformations are determined by 13C-NMR spectroscopy. Keywords: Phospholipid synthesis; Cyclic platelet activating factor analogue; Cyclic thioether; Chiral sulphur compound

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