Cas 1258456-87-9,C<sub>52</sub>H<sub>54</sub>

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Check Digit Verification of cas no

The CAS Registry Mumber 1258456-87-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,8,4,5 and 6 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1258456-87:
(9*1)+(8*2)+(7*5)+(6*8)+(5*4)+(4*5)+(3*6)+(2*8)+(1*7)=189
189 % 10 = 9
So 1258456-87-9 is a valid CAS Registry Number.

1258456-87-9Upstream product

523-27-3 9,10-Dibromoanthracene

1258456-87-9Downstream Products

1258456-87-9Relevant academic research and scientific papers

Development of laser dyes to realize low threshold in dye-doped cholesteric liquid crystal lasers

Uchimura, Makoto,Watanabe, Yo,Araoka, Fumito,Watanabe, Junji,Takezoe, Hideo,Konishi, Gen-Ichi

, p. 4473 - 4478 (2010)

Highly efficient luminescence dyes based on pyrene and anthracene derivatives (see figure) are synthesized for liquid crystal dye lasers. The threshold value of one of the pyrene derivatives is as low as 1/20 that of the commonly used DCM in cholesteric liquid crystal (CLC) distributed feedback lasers. Good optical properties such as luminous efficiency and solubility in CLCs are important factors for realizing a low threshold.

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