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127679-80-5

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127679-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127679-80-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,6,7 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 127679-80:
(8*1)+(7*2)+(6*7)+(5*6)+(4*7)+(3*9)+(2*8)+(1*0)=165
165 % 10 = 5
So 127679-80-5 is a valid CAS Registry Number.

127679-80-5Downstream Products

127679-80-5Relevant articles and documents

Solvent-free synthesis of trisphenols as starting precursors for the synthesis of calix[4]arenes using sulfonated multi-walled carbon nanotubes

Fareghi-Alamdari, Reza,Golestanzadeh, Mohsen,Zekri, Negar

, p. 3400 - 3412 (2016/05/09)

The condensation of phenol derivatives (12 substrates) with 2,6-bis(hydroxymethyl)phenols (BMP) (6 examples) is reported using sulfonated multi-walled carbon nanotubes (SO3H@MWCNTs) under solvent-free conditions as starting precursors for the synthesis of macrocyclic molecules of calix[4]arenes. The new protocol provides a series of trisphenol derivatives (21 examples) in high yields (up to 94%) and relatively short reaction times (15-120 min). Also, direct synthesis of calix[4]arenes from different trisphenols by use of the catalyst was reported (5 examples). Furthermore, the synthesized calix[4]arene was obtained using a one-pot method from simple and easily available starting materials such as p-cresol for the synthesis of 5,11,17,23-tetramethylcalix[4]arene-25,26,27,28-tetraol. Also, in this process SO3H@MWCNTs can be reused for seven runs with almost consistent efficiency and can be recovered by easy filtration.

Synthesis of polyfunctional aromatic ring systems (phloroglucide analogs) under microwave irradiation

Khalafi-Nezhad, Ali,Rad, Mohammad Navid Soltani,Hakimelahi, Gholam Hossein

, p. 2396 - 2403 (2007/10/03)

An efficient and rapid synthesis of phloroglucide analogs under microwave irradiation is described. The solid-phase condensation reaction of the 4-halo-2,6-bis(hydroxymethyl)phenols 1a,b with other substituted phenols in the presence of ZnCl2 afforded the target molecules in much higher yields than by classical solution-phase synthesis and allowed us to prepare new phloroglucide analogs possessing sensitive functional groups difficult to access by established means.

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