Welcome to LookChem.com Sign In|Join Free

CAS

  • or

19090-02-9

Post Buying Request

19090-02-9 Suppliers

Recommended suppliersmore

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

19090-02-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19090-02-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,0,9 and 0 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19090-02:
(7*1)+(6*9)+(5*0)+(4*9)+(3*0)+(2*0)+(1*2)=99
99 % 10 = 9
So 19090-02-9 is a valid CAS Registry Number.

19090-02-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name thiophen-3(2H)-one

1.2 Other means of identification

Product number -
Other names .thiofuran-3-one

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:19090-02-9 SDS

19090-02-9Relevant articles and documents

o-directed lithiation of acylated hydroxythiophenes

Vendina, Ineta,Parkova, Anete,Trapencieris, Peteris

, p. 1565 - 1572 (2016/11/01)

O-Carbamates derived from 2-hydroxy- and 3-hydroxy-thiophenes generated o-directed carbanions, which were transformed to the corresponding methyl sulfides and methyl and trimethylsilyl substituted thiophenes.

Tautomerism of the Monohydroxy Derivatives of Five-Membered O, N, and S Heterocycles

Capon, Brian,Kwok, Fu-Chiu

, p. 5346 - 5356 (2007/10/02)

The O-deuterated enolic tautomers 3-deuteroxybenzofuran, 3-deuteroxybenzothiophene, 3-deuteroxyindole, 3-deuteroxy-1-methylindole, 3-deuteroxyfuran, 3-deuteroxythiophene, 2-deuteroxybenzothiophene, and 2-deuteroxythiophene have been generated in solution in mixtures of CD3COCD3, CD3CN, or CD3SOCD3 with D2O by hydrolysis of their trimethylsilyl derivatives in the presence of DCl (1E-3 - 1E-4 M) and characterized by 1H NMR spectroscopy.Solutions of 3-hydroxypyrrole and of 3-hydroxy-1-methylpyrrole were obtained by methanolysis of their trimethylsilyl derivatives,evaporation of the methanol, and immediate dissolution in DMSO-d6.The carbocyclic analogues of the bicyclic heterocyclic enols 3-deuteroxyindene and 2-deuteroxyindene were also generated in solution.Attempts to prepare solutions of 2-deuteroxyfuran, 2-deuteroxypyrrole, and 2-deuteroxy-1-methylpyrrole were unsuccessful.The kinetics of ketonization of the OH forms of these enols have been investigated in water or aqueous acetonitrile solution.The equilibrium constants for the keto-enol tautomerism were also determined either by direct measurement when sufficient enol was present at equilibrium or as the ratio of the rate constant for enolization of the keto form to that for ketonization of the enol form, the former being determined by the iodine-trapping technique.The effect of solvent on the equilibrium constants was also studied.Sufficient data were available for the equilibrium between 3-hydroxyindole and 3-ketoindole for them to be analyzed by the four-parameter equation of Mills and Beak to yield an a value of 2.4 and a b value of -3.0.The pKas of the bicyclic enols were measured. 3-Hydroxybenzofuran and3-hydroxybenzothiophene are stronger acids than 3-hydroxyindole and 3-hydroxy-1-methylindole.The ketonization reactions are general acid and general base catalyzed and their mechanisms are discussed.

HETEROCYCLIC SILYL ENOL ETHER CHEMISTRY: SYNTHESIS AND REACTIVITY OF 3-TRIMETHYLSILOXYFURAN AND 3-TRIMETHYLSILOXYTHIOPHENE

Camici, Lucia,Ricci, Alfredo,Taddei, Maurizio

, p. 5155 - 5158 (2007/10/02)

The preparation of the title compounds is reported starting from the corresponding bromo derivatives. 3-Trimethylsiloxyfuran gives rise easily to cycloadditions affording bicyclic tetrahydrofuranoic systems.

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 19090-02-9