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143901-57-9

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143901-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143901-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,9,0 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143901-57:
(8*1)+(7*4)+(6*3)+(5*9)+(4*0)+(3*1)+(2*5)+(1*7)=119
119 % 10 = 9
So 143901-57-9 is a valid CAS Registry Number.

143901-57-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,5-dimethyl-3-pent-1-enylpyrazine

1.2 Other means of identification

Product number -
Other names -

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:143901-57-9 SDS

143901-57-9Downstream Products

143901-57-9Relevant articles and documents

Zirconium-Mediated Reactions of Alkylpyrazines and Alkynes. Synthesis of Highly Substituted Alkylpyrazines

Guram, Anil S.,Jordan, Richard F.

, p. 5994 - 5999 (2007/10/02)

Sequential one-pot addition of alkylpyrazines, alkynes, and a proton source to a solution of Cp2Zr(Me)(THF)+ (1) in CH2Cl2 at room temperature affords (E)-alkenyl-substituted alkylpyrazines 2-10 in excellent yields.The regio- and stereoselectivity observed in these reactions is similar to those observed previously for related early transition metal-mediated reactions and is ascribed to steric and Si electronic effects.Conventional synthetic organic manipulation of the alkenylpyrazines provides easy access to a variety of highly substituted alkylpyrazines including tri- and tetrasubstituted alkylpyrazines 13, 17-20, dibromoalkylpyrazine 14, bromoalkylpyrazine 15, and epoxyalkylpyrazine 16.

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