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100186-21-8

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100186-21-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100186-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,1,8 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 100186-21:
(8*1)+(7*0)+(6*0)+(5*1)+(4*8)+(3*6)+(2*2)+(1*1)=68
68 % 10 = 8
So 100186-21-8 is a valid CAS Registry Number.

100186-21-8Relevant articles and documents

4'-tert-AlkylbenzoCrown-5-Ether. Syntheses and Complexes with Potassium Thiocyanate

Beger, J.,Meerbote, M.

, p. 2 - 9 (2007/10/02)

The title compounds 4 are synthesized either by alkylation of pyrocatechole 1 in 4-position and followed by ring closure with 1,11-dichloro-3,6,9-trioxaundecane or by alkylation of benzo-crown-5 3.In most cases the way first mentioned gives better results.Analytical samples of the alkylated benzocrown-5 ethers 4 are obtained through complexing with KSCN.Physical data and 1H-n.m.r.-spectra of 5 new pyrocatecholes 2 and 6 new benzocrown-5 ethers 4 are given.

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