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219998-27-3

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219998-27-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 219998-27-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,9 and 8 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 219998-27:
(8*2)+(7*1)+(6*9)+(5*9)+(4*9)+(3*8)+(2*2)+(1*7)=193
193 % 10 = 3
So 219998-27-3 is a valid CAS Registry Number.

219998-27-3Downstream Products

219998-27-3Relevant articles and documents

Benzothiazole-containing two-photon chromophores exhibiting strong frequency upconversion

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, (2008/06/13)

There are provided asymmetrical two-photon chromophores of the formula: D-Ar-A wherein Ar is selected from the group consisting of wherein Fl is a fluorene group of the formula: wherein R1 and R2 are alkyl groups having 2 to 20 carbon atoms, and wherein R1 and R2 are the same or different; wherein D is wherein Q is selected from the group consisting of -H, -OH and -O-CxH2x+1, wherein x has a value of 1 to 10; and wherein A is selected from the group consisting of wherein Z is selected from the group consisting of -O- and -S-.

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