Welcome to LookChem.com Sign In|Join Free

CAS

  • or

13522-38-8

Post Buying Request

13522-38-8 Suppliers

Recommended suppliersmore

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

13522-38-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13522-38-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,5,2 and 2 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 13522-38:
(7*1)+(6*3)+(5*5)+(4*2)+(3*2)+(2*3)+(1*8)=78
78 % 10 = 8
So 13522-38-8 is a valid CAS Registry Number.

13522-38-8Relevant articles and documents

Kinetic study on reactions of O-Y-substituted phenyl thionobenzoates with quinuclidine: Factors governing reactivity and reaction mechanism

Yang, Eun-Ji,Kim, Min-Young,Um, Ik-Hwan

, p. 1120 - 1125 (2015/08/11)

Second-order rate constants (kquin) for the reactions of O-Y-substituted phenyl thionobenzoates (3a-3i) with quinuclidine have been measured spectrophotometrically. Comparison of kquin with the rate constants reported previously for the corresponding reactions with benzylamine (kBzNH2) has revealed that quinuclidine is less reactive than benzylamine toward 3a-3i although the former is 2.1 pKa units more basic than the latter. Steric hindrance exerted by quinuclidine has been suggested to be responsible for the decreased reactivity of the tertiary amine. The Bronsted-type plot for the reactions of 3a-3i with quinuclidine is linear with βlg = -0.37. The Hammett plot correlated with σ(Formula presented.) constants exhibits many scattered points (R2 = 0.982). In contrast, the Yukawa-Tsuno plot results in an excellent linear correlation (R2 = 0.9992) with ρY = 0.96 and r = 0.51, indicating that a negative charge develops partially on the O atom of the leaving group. Thus, the reactions of 3a-3i with quinuclidine have been concluded to proceed through a concerted mechanism in which expulsion of the leaving group is advanced only a little in the rate-determining transition state.

Addition-Elimination Mechanism of Aminolyses of 4-Nitrophenyl Benzoate and Its Sulfur Analogue

Um, Ik-Hwan,Kwon, Hye-Jin,Kwon, Dong-Sook

, p. 1801 - 1817 (2007/10/03)

The aminolysis of O-(4-nitrophenyl) thiobenzoate proceeds via an addition-elimination mechanism in which the rate-determining step is dependent on both concentration and basicity of amines.

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 13522-38-8