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16503-81-4

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16503-81-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16503-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,5,0 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16503-81:
(7*1)+(6*6)+(5*5)+(4*0)+(3*3)+(2*8)+(1*1)=94
94 % 10 = 4
So 16503-81-4 is a valid CAS Registry Number.

16503-81-4Relevant articles and documents

Silver-Catalyzed C-H Aryloxydifluoromethylation and Arylthiodifluoromethylation of Heteroarenes

Zhu, Xiao-Lei,Huang, Yangen,Xu, Xiu-Hua,Qing, Feng-Ling

, p. 5451 - 5455 (2020)

The oxidative C-H aryloxydifluoromethylation and arylthiodifluoromethylation of heteroaromatic compounds through the decarboxylation of easily accessible aryloxydifluoroacetic acids and arylthiodifluoroacetic acids, respectively, are disclosed. These reac

Fluorodecarboxylation: Synthesis of aryl trifluoromethyl ethers (ArOCF3) and thioethers (ArSCF3)

Krishanmoorthy, Sankarganesh,Schnell, Simon D.,Dang, Huong,Fu, Fang,Prakash, G.K. Surya

, p. 130 - 135 (2017/09/06)

Fluorodecarboxylation of aryloxydifluoroacetic acid (ArOCF2CO2H) and arylmercaptodifluoroacetic acid (ArSCF2CO2H) towards ArXCF3 (X = O, S) using silver (I) salts in the presence of Selectfluor in a biphasic system with trifluoroacetic acid additive is discussed.

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