Welcome to LookChem.com Sign In|Join Free

CAS

  • or

137300-41-5

Post Buying Request

137300-41-5 Suppliers

Recommended suppliersmore

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

137300-41-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137300-41-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,0 and 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137300-41:
(8*1)+(7*3)+(6*7)+(5*3)+(4*0)+(3*0)+(2*4)+(1*1)=95
95 % 10 = 5
So 137300-41-5 is a valid CAS Registry Number.

137300-41-5Relevant articles and documents

Accumulation of Hydrogen-Bonding and Electrostatic Binding Sites: Stabilization of Salts in Hydroxylic Media via Intramolecular Hydrogen Bonding

Motumura, Tadahiro,Aoyama, Yasuhiro

, p. 7224 - 7228 (1991)

Pyridyl-bisresorcinol derivative 1a and dodecyl phosphate (5) form a pyridinium-phosphate salt which is stabilized via hydrogen-bonding interaction between the bisresorcinol moiety and bound phosphate anion.The salt-formation constants (K) are relatively insensitive to solvent polarities; K1a(5) = 1.2*103 (water-methanol (2:1)), 1.2*103 (methanol), 1.1*103 (ethanol), and 6.9*102 M-1 (2-propanol).On the other hand, the salt formation with 2-picoline (3) as a less crowded reference host takes place with much difficulty and is highly solvent dependent; K3(5) = 2.1*102 (water-methanol (2:1)), 3.2*10 (methanol), 1.6*10 (ethanol), and 9.2 (2-propanol).The selectivities K1a(5)/K3(5) thus increase with respect to change in solvents in the order, water-methanol (2:1) (6) methanol (37) ethanol (72) 2-propanol (75).The role of a pair of hydroxyl groups in the bisresorcinol moiety is discussed in terms of intramolecular microsolvation.

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 137300-41-5