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20716-89-6

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20716-89-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20716-89-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,1 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20716-89:
(7*2)+(6*0)+(5*7)+(4*1)+(3*6)+(2*8)+(1*9)=96
96 % 10 = 6
So 20716-89-6 is a valid CAS Registry Number.

20716-89-6Upstream product

20716-89-6Downstream Products

20716-89-6Relevant articles and documents

The novel usage of thiourea nitrate in aryl nitration

Meng, Ge,Zheng, Mei-Lin,Zheng, A-Qun,Wang, Mei,Shi, Juan

, p. 87 - 89 (2014/02/14)

Thiourea nitrate (TN) was easily prepared from thiourea and nitric acid to explore its use as a new nitration reagent. Nitrations of various aromatic compounds utilizing TN in concentrated sulfuric acid were studied. TN could convert aromatic compounds to the corresponding nitrated derivatives with various abnormal yields under mild conditions. The results suggested that the reaction mechanism might be different from those of traditional nitration reagents.

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