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5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonylmethoxy-26,28-bis(diphenylphosphinomethoxy)calix<4>arene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

178152-74-4

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178152-74-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178152-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,1,5 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 178152-74:
(8*1)+(7*7)+(6*8)+(5*1)+(4*5)+(3*2)+(2*7)+(1*4)=154
154 % 10 = 4
So 178152-74-4 is a valid CAS Registry Number.

178152-74-4Relevant academic research and scientific papers

Multifunctional phosphane and phosphane oxide ligands derived from p-tert-butylcalixarene. Synthesis of a large diphosphane with C2 symmetry and behaving as a cis or trans binding ligand

Loeber, Cyrille,Matt, Dominique,Cian, Andre De,Fischer, Jean

, p. 297 - 306 (2007/10/02)

The calixarene derived di(phosphane oxide) 2 (cone conformation) was obtained in 78percent yield by treatment of 1 with 2 equiv NaO-t-Bu followed by reaction with 2 equiv Ph2P(O)CH2OTs.When KO-t-Bu was used instead of NaO-t-Bu, the partial cone isomer

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