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149966-41-6

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149966-41-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149966-41-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,9,6 and 6 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 149966-41:
(8*1)+(7*4)+(6*9)+(5*9)+(4*6)+(3*6)+(2*4)+(1*1)=186
186 % 10 = 6
So 149966-41-6 is a valid CAS Registry Number.

149966-41-6Upstream product

149966-41-6Relevant articles and documents

AZACOUMARIN AND AZATHIOCOUMARIN DERIVATIVES FOR USE IN OPTICALLY ACTIVE DEVICES

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Page/Page column 193-194, (2021/11/26)

The present invention relates to novel ophthalmic devices comprising polymerized compounds comprising a photoactive chromophore, said polymerized compounds, and special monomer compounds being particularly suitable for compositions and ophthalmic devices. The present invention is also directed to a process of changing the optical properties of said ophthalmic device or a precursor article for manufacturing said ophthalmic device.

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