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33074-17-8

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33074-17-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33074-17-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,0,7 and 4 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33074-17:
(7*3)+(6*3)+(5*0)+(4*7)+(3*4)+(2*1)+(1*7)=88
88 % 10 = 8
So 33074-17-8 is a valid CAS Registry Number.

33074-17-8Relevant articles and documents

Solvent-Controlled α-Monobromination, α,α-Dibromination or Imidation of 1,3-Diketones with N-Bromosuccinimide

Zou, Liang-Hua,Li, Yan-Chun,Li, Ping-Gui,Zhou, Jing,Wu, Zhimeng

supporting information, p. 5639 - 5643 (2018/10/05)

In this work, we present a solvent-controlled regioselective method for α-monobromination, dibromination or imidation of 1,3-diketones with N-bromosuccinimide under simple reaction conditions. The employment of solvents plays a key role on the reaction selectivity providing α-monobrominated, dibrominated and imidated products. Visible light irradiation accelerates the dibromination reaction of 1,3-diketones. In particular, one important solvent was found to be highly effective for the imidation of 1,3-diketones under base-free condition.

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