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137374-31-3

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137374-31-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137374-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,7 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137374-31:
(8*1)+(7*3)+(6*7)+(5*3)+(4*7)+(3*4)+(2*3)+(1*1)=133
133 % 10 = 3
So 137374-31-3 is a valid CAS Registry Number.

137374-31-3Downstream Products

137374-31-3Relevant academic research and scientific papers

Photoreaction of 2,3-Bispyrazine in the Crystalline State and in Acetonitrile Solution

Tsutsumi, Takehiro,Takeuchi, Atsuo,Hashimoto, Yukihiko,Hasegawa, Masaki,Iitaka, Yoichi

, p. 1533 - 1536 (2007/10/02)

The photoreaction behaviors of 2,3-bispyrazine (1) in the crystalline state as well as in acetonitrile solution were examined mechanistically.In the crystalline state, stepwise cycloadditions occurred between two facing molecules under the crystal lattice control to give a orthocyclophane derivative in 74percent yield.Photoirradiations of 1 in acetonitrile solution were also performed.In this case, products distributions were changed depending on the cut off wavelength.

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