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155623-70-4

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155623-70-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155623-70-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,6,2 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 155623-70:
(8*1)+(7*5)+(6*5)+(5*6)+(4*2)+(3*3)+(2*7)+(1*0)=134
134 % 10 = 4
So 155623-70-4 is a valid CAS Registry Number.

155623-70-4Downstream Products

155623-70-4Relevant articles and documents

[2+1] Cycloaddition of 1-seleno-2-silylethenes. Selenium-assisted 1,2-silicon shift for cyclopropanation

Yamazaki, Shoko,Tanaka, Mayumi,Yamaguchi, Akio,Yamabe, Shinichi

, p. 2356 - 2365 (1994)

A novel one-step [2 + 1] cycloaddition synthesis of cyclopropanes has been developed. Reaction of (E)-1-(phenylseleno)-2-silylethenes 1a,b with vinyl ketones 2a-d and acrolein (2e) in the presence of SnCl4 gave cyclopropane products by a formal

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