Cas 189681-06-9,3,4,5,7-tetra-O-benzyl-1-C-methanenitro-α-D-gluco-heptulopyranose

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Check Digit Verification of cas no

The CAS Registry Mumber 189681-06-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,6,8 and 1 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 189681-06:
(8*1)+(7*8)+(6*9)+(5*6)+(4*8)+(3*1)+(2*0)+(1*6)=189
189 % 10 = 9
So 189681-06-9 is a valid CAS Registry Number.

189681-06-9Upstream product

133697-34-4 2,6-anhydro-3,4,5,7-tetra-O-benzyl-1-deoxy-D-gluco-hept-1-enitol

189681-06-9Downstream Products

189681-08-1 1,6-anhydro-2,3,4-trideoxy-4-C-(3,4,5,7-tetra-O-benzyl-1-deoxy-α-D-gluco-2-heptulopyranos-1-yl)-D-glycero-hexo-pyranos-2-ulose

189681-06-9Relevant academic research and scientific papers

C-disaccharides I. Stereoselective approach to β-(1-4)-3-deoxy-C-disaccharides from levoglucosenone

Witczak, Zbigniew J.,Chhabra, Renu,Chojnacki, Joanna

, p. 2215 - 2218 (1997)

β-(1-4)-C-Disaccharides have been synthesized in four steps by stereoselective base catalyzed Michael addition reaction of glucosyl nitromethane to the chiral synthon, levoglucosenone followed by radical removal of the nitro group with tributyltinhydride.

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