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100203-49-4

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100203-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100203-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,2,0 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 100203-49:
(8*1)+(7*0)+(6*0)+(5*2)+(4*0)+(3*3)+(2*4)+(1*9)=44
44 % 10 = 4
So 100203-49-4 is a valid CAS Registry Number.

100203-49-4Downstream Products

100203-49-4Relevant articles and documents

Synthesis of Naphthalenoferrocenophanes

Kasahara, Akira,Izumi, Taeko,Shimizu, Iwao,Oikawa, Tadashi,Umezawa, Hiroshi,et al.

, p. 1560 - 1569 (2007/10/02)

Several naphthalenoferrocenophanes, in which the two cyclopentadienyl rings are linked by two naphthalene rings were synthesized via intramolecular reductive coupling of the corresponding formyl compounds with a low valent titanium reagent.Their structures are deduced from IR, NMR, and UV spectra.Transannular ?-electronic interaction between the two naphthalene rings is discussed on the basis of electronic spectra.

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