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80253-77-6

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80253-77-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80253-77-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,2,5 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 80253-77:
(7*8)+(6*0)+(5*2)+(4*5)+(3*3)+(2*7)+(1*7)=116
116 % 10 = 6
So 80253-77-6 is a valid CAS Registry Number.

80253-77-6Downstream Products

80253-77-6Relevant articles and documents

DERIVATIVES AND REACTIONS OF GLUTACONALDEHYDE-XIII. REGIOSPECIFIC RING OPENING OF 3-SUBSTITUTED PYRIDINES

Becher, Jan,Finsen, Lars,Winckelmann, Ib

, p. 2375 - 2378 (2007/10/02)

A number of nucleophilic ring openings of 3-substituted pyridinium salts have been reinvestigated and summarized.The structure of the resulting stable glutaconaldehyde derivatives was investigated in detail by 1H NMR.It has been concluded that in general nucleophilic pyridinium ring openings are highly regiospecific.In each case investigated to date a single product was isolated, as a result of attack by the nucleophile at only one of the pyridine α-positions.With the OH ion as the only nucleophile, attack occurs at the pyridine C-2, while larger nucleophiles such as amines and carbanions attack at the pyridine C-6.This was found to be the case for a variety of 3-substituted pyridines such as 3-methyl-, 3-methoxy-, 3-cyano-, 3-chloro-pyridine.

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