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84109-66-0

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84109-66-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84109-66-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,1,0 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 84109-66:
(7*8)+(6*4)+(5*1)+(4*0)+(3*9)+(2*6)+(1*6)=130
130 % 10 = 0
So 84109-66-0 is a valid CAS Registry Number.

84109-66-0Downstream Products

84109-66-0Relevant articles and documents

Unusual Stereochemistry in the Copper-catalyses Ring Opening of a Carbohydrate Oxirane with Vinylmagnesium Bromide

Brockway, Carol,Kocienski, Philip,Pant, Chandra

, p. 875 - 878 (2007/10/02)

The oxirane ring of 4,6-O-benzylidene-1,5:2,3-dianhydro-D-allitol (1) opened regio- and stereo-selectively at C-2 with Me2CuLi and allylmagnesium chloride in the presence of catalytic amounts of CuI.With vinylmagnesium bromide, however, the ring opening of (1) was regioselective but a mixture of stereoisomers (10) and (12) was obtained corresponding to retention and inversion at C-2.A mechanism for the formation of the anomalous retention product (12) is proposed.

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