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643-91-4

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643-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 643-91-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 643-91:
(5*6)+(4*4)+(3*3)+(2*9)+(1*1)=74
74 % 10 = 4
So 643-91-4 is a valid CAS Registry Number.

643-91-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-methoxy-6-pyridin-3-ylpyran-2-one

1.2 Other means of identification

Product number -
Other names 4-methoxy-6-(pyridin-3-yl)-2h-pyran-2-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:643-91-4 SDS

643-91-4Downstream Products

643-91-4Relevant articles and documents

Asymmetric Total Synthesis of ent-Pyripyropene A

Fuse, Shinichiro,Ikebe, Ayako,Oosumi, Kazuya,Karasawa, Tomoya,Matsumura, Keisuke,Izumikawa, Miho,Johmoto, Kohei,Uekusa, Hidehiro,Shin-Ya, Kazuo,Doi, Takayuki,Takahashi, Takashi

, p. 9454 - 9460 (2015)

An asymmetric total synthesis of ent-pyripyropene A was achieved by a convergent synthetic route. We used our originally developed TiIII-catalyzed radical cyclization to construct an AB-ring portion that consisted of a trans-decalin skeleton wi

Synthesis and Reaction of 6-Substituted 3-Methoxycarbonyl-4-methylthio-2H-pyran-2-one Derivatives

Tominaga, Yoshinori,Ushirogochi, Atsuyuki,Matsuda, Yoshiro

, p. 1557 - 1567 (2007/10/02)

Reaction of aryl and styryl methyl ketones 1a-m with dimethyl bis(methylthio)methylenemalonate (2) in the presence of potassium hydroxide in dimethyl sulfoxide gave the corresponding methyl 6-aryl- and 6-styryl-4-methylthio-2-oxo-2H-pyran-3-carboxylates 3

Mechanism of acylation of dilithium salts of β-keto esters: An efficient synthesis of anibine

Narasimhan,Ammanamanchi

, p. 3945 - 3947 (2007/10/02)

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