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481666-54-0

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481666-54-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 481666-54-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,8,1,6,6 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 481666-54:
(8*4)+(7*8)+(6*1)+(5*6)+(4*6)+(3*6)+(2*5)+(1*4)=180
180 % 10 = 0
So 481666-54-0 is a valid CAS Registry Number.

481666-54-0Relevant articles and documents

CROWN ETHER DERIVATIVES

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Page/Page column 53, (2010/02/10)

The invention describes crown ether chelators, including crown ethers having the formula (A) or (B); and aza-substituted and thia-substituted analogs thereof. These crown ethers may be substituted by a dye moiety, a chemically reactive group, a conjugated substance, or a combination thereof. Chelators that are substituted by fluorescent dyes are particularly useful as indicators for metal cations, particularly Na and K ions, and particularly where binding of the target ion results in a change in the fluorescence properties of the indicator that can be correlated with the ion concentration. Methods are provided for utilizing reactive groups on the chelators for conjugation to dyes, lipids and polymers and methods for enhancing entry of the indicators into living cells.

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