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171797-88-9

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171797-88-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 171797-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,7,9 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 171797-88:
(8*1)+(7*7)+(6*1)+(5*7)+(4*9)+(3*7)+(2*8)+(1*8)=179
179 % 10 = 9
So 171797-88-9 is a valid CAS Registry Number.

171797-88-9Upstream product

171797-88-9Downstream Products

171797-88-9Relevant articles and documents

Self-organised nano-arrays of p-phosphonic acid functionalised higher order calixarenes

Clark, Thomas E.,Makha, Mohamed,Sobolev, Alexandre N.,Su, Dian,Rohrs, Henry,Gross, Michael L.,Atwood, Jerry L.,Raston, Colin L.

, p. 1478 - 1483 (2008)

Water-soluble p-phosphonic acid calix[n]arenes (n = 5, 6 or 8) have been synthesized in five steps in overall 68, 66, 67% yield, respectively, by the recently developed procedure for p-phosphonic acid calix[4]arene. The hydrogen bonding prowess of the phosphonic acids dominates their self assembly into nano-arrays in both solution and the gas phase. In DMSO, nano-arrays of p-phosphonic acid calix[6]arene are stable for over 24 h, with the solvent molecules slowly disrupting the hydrogen bonded network affording solvated monomeric units. In the gas phase, nano-arrays of around 20 calixarene units were observed for the p-phosphonic acid calix[n]arenes using MALDI-TOF-MS, and ESI-MS revealed the presence of heteroleptic nano-arrays for a 1: 1 mixture of p-phosphonic acid calix[4,5]arenes. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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