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33490-00-5

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33490-00-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33490-00-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,9 and 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 33490-00:
(7*3)+(6*3)+(5*4)+(4*9)+(3*0)+(2*0)+(1*0)=95
95 % 10 = 5
So 33490-00-5 is a valid CAS Registry Number.

33490-00-5Downstream Products

33490-00-5Relevant articles and documents

Transition-metal-free mono- or dinitration of protected anilines

Dai, Enrui,Dong, Ying,Dong, Yongrui,Kong, Rui,Liang, Deqiang,Liu, Guangzhang,Ma, Yinhai,Wu, Qiong

, (2020/04/27)

An amide-assisted arene nitration is presented, and both mono- and dinitration of protected anilines could be effected by using NaNO2 and NaNO3 as the mono- and bisnitrating agents, respectively. This divergent synthesis is transition-metal- and acid-free, and features a broad substrate scope, low cost, and ortho–para selectivity.

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