Welcome to LookChem.com Sign In|Join Free


  • or


Post Buying Request

40203-74-5 Suppliers

Recommended suppliersmore

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

40203-74-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40203-74-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,0 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 40203-74:
65 % 10 = 5
So 40203-74-5 is a valid CAS Registry Number.



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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017


1.1 GHS Product identifier

Product name methyl 2-cyclohexylideneacetate

1.2 Other means of identification

Product number -
Other names methyl cyclohexylideneacetate

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:40203-74-5 SDS

40203-74-5Relevant articles and documents

Complementary regioselective cyclopropyl ring openings of 6- formyl-spirobicyclo[5.2]octane mediated by TMSC1 and TBAI

Huang, He,Forsyth, Craig J.

, p. 16341 - 16348 (1997)

Absolute control over the regioselectivity of trimethylsilyl halide-induced cyclopropane fragmentation of a spirofused cyclopropyl carboxaldehyde has been achieved by simply varying the reaction stoichiometry and the nature of the halide. Treatment of 6-formyl- spirobicyclo[5.2]octane with a large excess of TMSC1 gave 3-(1- chlorocyclohexyl)propanal (84% yield), whereas 2-(1- iodomethylcyclohexyl)ethanal (86% yield) was obtained using 10 equivalents each TMSC1 and n-Bu4NI (TBAI). Use of only a moderate excess of TMSC1 or TMSC1 and TBAI gave the rearranged product 3-(1- cyclohexenyl)-propanal.

Pd-catalyzed regioselective C?H alkenylation and alkynylation of allylic alcohols with the assistance of a bidentate phenanthroline auxiliary

Hirano, Koji,Miura, Masahiro,Xu, Shibo

supporting information, p. 9059 - 9064 (2020/12/02)

A Pd-catalyzed regioselective C?H alkenylation of allylic alcohols with electron-deficient alkenes has been developed. The key to success is the introduction of bidentately coordinating phenanthroline directing group, which enables the otherwise challenging and regioselective C?H activation at the proximal alkenyl C?H bonds over the conceivably competitive allylic C?O bond activation. The same Pd/phenanthroline system is efficient for the C?H alkynylation of allylic alcohols with alkynyl bromides.

Chemical assembly systems: Layered control for divergent, continuous, multistep syntheses of active pharmaceutical ingredients

Ghislieri, Diego,Gilmore, Kerry,Seeberger, Peter H.

supporting information, p. 678 - 682 (2015/03/04)

While continuous chemical processes have attracted both academic and industrial interest, virtually all active pharmaceutical ingredients (APIs) are still produced by using multiple distinct batch processes. To date, methods for the divergent multistep continuous production of customizable small molecules are not available. A chemical assembly system was developed, in which flow-reaction modules are linked together in an interchangeable fashion to give access to a wide breadth of chemical space. Control at three different levels - choice of starting material, reagent, or order of reaction modules - enables the synthesis of five APIs that represent three different structural classes (γ-amino acids, γ-lactams, β-amino acids), including the blockbuster drugs Lyrica and Gabapentin, in good overall yields (49-75%).

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)


What can I do for you?
Get Best Price

Get Best Price for 40203-74-5