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87389-98-8

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87389-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87389-98-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,8 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 87389-98:
(7*8)+(6*7)+(5*3)+(4*8)+(3*9)+(2*9)+(1*8)=198
198 % 10 = 8
So 87389-98-8 is a valid CAS Registry Number.

87389-98-8Downstream Products

87389-98-8Relevant articles and documents

NICOTINIC ACID CROWN ETHERS: SYNTHESIS, COMPLEXATION AND REDUCTION

Newkome, George R.,Marston, Charles R.

, p. 2001 - 2008 (1983)

2,6-Bis(bromomethyl)nicotinic oxazoline (15), prepared from ethyl 2,6-dimethylnicotinate, was converted into the 1:1-macrocyclic oxazolines 19 and 22 as well as the isomeric macrocyclic dimers 20.Ethyl 2,6-bis(bromomethyl)nicotinate (23), prepared from 6b, was converted to the corresponding 1:1-dibenzo-18-crown-6 macrocyclic analog 24.NMR and mass spectral data were used to ascertain the macrocyclic structures.Reaction of 22 with EtMgBr afforded, after oxidation, the 4-substituted pyridino macrocycle 26 in high yield.However, under identical conditions, the non-oxazoline macrocycle 27 was recovered in toto.

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