Welcome to LookChem.com Sign In|Join Free

CAS

  • or

92739-64-5

Post Buying Request

92739-64-5 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

92739-64-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92739-64-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,7,3 and 9 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 92739-64:
(7*9)+(6*2)+(5*7)+(4*3)+(3*9)+(2*6)+(1*4)=165
165 % 10 = 5
So 92739-64-5 is a valid CAS Registry Number.

92739-64-5Relevant articles and documents

Cationic Porphyrins in Water. 1H NMR and Fluorescence Studies on Dimer and Molecular Complex Formation

Kano, Koji,Takei, Masao,Hashimoto, Shizunobu

, p. 2181 - 2187 (1990)

Three kinds od cationic porphyrins have been employed to study intermolecular interaction of these porphyrins in water.Fluorescence behavior of 4,4',4",4'"-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis tetrachloride (TOPyP) is essentially the same as that of 4,4',4",4'"-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis tetrachloride (TMPyP), which has been assumed to form a dimer in water even at very low concentrations (>2 x 10-7 M).In contrast with these cationic porphyrins, 4,4',4",4'"-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis tetrachloride (TAPP) shows the fluorescence spectrum having well-resolved Q(0-0) and Q(0-1) bands.The self-association of TAPP is detectable at higher TAPP concentrations and/ or in the presence of NaCl. 1H NMR clearly indicates the formation of the TAPP aggregates where the monomer-aggregates exchange rates are fast.TMPyP and TOPyP form molecular complexes with proflavin (PFl) that are more stable than the TAPP-PFl complex.The continous variation method for the absorption spectral change indicates the 2:1 complex of TMPyP and/ or TOPyP and PFl and the 1:1 complex of TAPP and PFl.These cationic porphyrins also form molecular complexes with bovine serum albumin (BSA) at pH 5.3, the stoichiometries being 4:1 and 2:1 for the TMPyP- and TAPP-BSA complexes, respectively.All the experimental results cannot provide the direct evidence for the dimer model of TMPyP but can be interpreted reasonably in terms as that both TMPyP and TOPyP form the dimers in water even at very low concentrations while TAPP exists predominantly as its monomer.A dipole-induced dipole interaction seems to play an important role in the formation of the dimers and other molecular complexes of TMPyP and TOPyP.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 92739-64-5