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125520-67-4

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125520-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125520-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,5,2 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 125520-67:
(8*1)+(7*2)+(6*5)+(5*5)+(4*2)+(3*0)+(2*6)+(1*7)=104
104 % 10 = 4
So 125520-67-4 is a valid CAS Registry Number.

125520-67-4Downstream Products

125520-67-4Relevant articles and documents

Synthesis, functionalization, and isolation of planar-chiral pillar[5]arenes with bulky substituents using a chiral derivatization agent

Al-Azemi, Talal F.,Vinodh, Mickey,Alipour, Fatemeh H.,Mohamod, Abdirahman A.

, p. 23295 - 23301 (2019/08/12)

Bulky perneopentyloxy-pillar[5]arene (Pillar-1) was synthesized and its conformational mobility was investigated using variable-temperature 1H NMR spectroscopy. The host-guest interactions between Pillar-1 and n-octyltrimethylammonium hexafluorophosphate (OMA) were investigated, and the formation of a 1:1 complex was revealed via1H NMR. Planar-chiral isomers were synthesized via the reaction of a hydroxy-functionalized pillar[5]arene with chiral derivatization agent (S)-(+)-MTPA-Cl. The (Sp, R)-and (Rp, R)-forms of the pillar[5]arene diastereomers were isolated by HPLC, and their structures were analyzed by 19F NMR. HPLC measurements indicated that racemization did not take place at 40 °C for 72 h.

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