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500297-38-1

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500297-38-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500297-38-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,2,9 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 500297-38:
(8*5)+(7*0)+(6*0)+(5*2)+(4*9)+(3*7)+(2*3)+(1*8)=121
121 % 10 = 1
So 500297-38-1 is a valid CAS Registry Number.

500297-38-1Downstream Products

500297-38-1Relevant articles and documents

Complexation behavior and crystal structure of a dithia[16.3.3](1,2,6)cyclophane: A novel one-dimensional coordination polymer with perchlorate anions as linkers

Xu, Jianwei,Lai, Yee-Hing

, p. 9199 - 9202 (2007/10/03)

The synthesis of 20,28-dimethyl-24,33-dithia-1,4,7,10,13,16-hexaoxa[16.3.3](1,2,6)cyclophane 3 was achieved by cesium carbonate-assisted high dilution cyclization. Cyclophane 3 exhibited strong complexation towards all alkali metal ions. The change in chemical shift for the bridge methylene protons upon addition of alkali metal ions correlated to log Ka. The crystal structure of cyclophane 3 as well as its sodium and potassium complexes was studied. Cyclophane 3 formed a novel one-dimensional coordination polymer with potassium perchlorate using anions as the linkers, while the complex of 3 with sodium perchlorate had a dimeric structure.

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