Welcome to LookChem.com Sign In|Join Free

CAS

  • or

87012-28-0

Post Buying Request

87012-28-0 Suppliers

Recommended suppliersmore

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

87012-28-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87012-28-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,0,1 and 2 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 87012-28:
(7*8)+(6*7)+(5*0)+(4*1)+(3*2)+(2*2)+(1*8)=120
120 % 10 = 0
So 87012-28-0 is a valid CAS Registry Number.

87012-28-0Relevant articles and documents

Isomerization and Aromatization of the 1,3-Di-tert-butylcyclohexadienes in Strongly Basic Media

Venkatasubramanian, N.,Hawkins, Adrian,Siegel, Samuel

, p. 1222 - 1226 (2007/10/02)

The five isomeric 1,3-di-tert-butylcyclohexadienes are equilibrated in t-BuOK/Me2SO at 30-55 deg C.In lithium ethylamide in ethylamine at 0 deg C, equilibration is accomplished within the set of three dienes which possess a tertiary hydrogen or between the other two dienes; however, one set is not transformed to the other.Aromatization accompanies the equilibration of the set of three but not the set of two.With a large excess of KAPA, the diene is transformed rapidly to the salt which aromatizes.With an excess of diene, the interconversion of all of the dienes accompanies aromatization (intraset isomerization being faster than interset interchange).In KAPA at 0 deg C, the introduction of dicyclohexyl-18-crown-6 inhibits aromatization; however, after a time reaction slows although the basicity of the solution remains strong enough to abstract a proton from a tertiary carbon.The effect of the base system upon the competitive reactions of cyclohexadienyl carbanions is understood in terms of the differing interactions of the carbanionic salts with the medium.

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 87012-28-0