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6621-97-2

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6621-97-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6621-97-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,2 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6621-97:
(6*6)+(5*6)+(4*2)+(3*1)+(2*9)+(1*7)=102
102 % 10 = 2
So 6621-97-2 is a valid CAS Registry Number.

6621-97-2SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,3-Diphenyl-4-thioxo-3,4-dihydrochinazolin

1.2 Other means of identification

Product number -
Other names 2,3-diphenyl-2H-quinazoline-4-thione

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:6621-97-2 SDS

6621-97-2Relevant articles and documents

Copper-catalyzed aerobic double functionalization of benzylic C(sp3)-H bonds for the synthesis of 3-hydroxyisoindolinones

Nozawa-Kumada, Kanako,Matsuzawa, Yuta,Ono, Kanako,Shigeno, Masanori,Kondo, Yoshinori

, p. 8604 - 8607 (2021/09/02)

A copper-catalyzed aerobic 3-hydroxyisoindolinone synthesis was developed via the benzylic double C(sp3)-H functionalization of 2-alkylbenzamides. In this reaction, molecular oxygen was used as both an oxidant for C(sp3)-H functionalization and an oxygen source. Our method can be extended to diverse benzylic C(sp3)-H bonds and shows excellent functional group tolerance. This journal is

Lithium–Bromide Exchange versus Nucleophilic Addition of Schiff's base: Unprecedented Tandem Cyclisation Pathways

Orr, Samantha A.,Border, Emily C.,Andrews, Philip C.,Blair, Victoria L.

supporting information, (2019/08/16)

By exploring lithium–bromide exchange reactivity of aromatic Schiff's bases with tert-butyllithium (tBuLi), we have revealed unprecedented competitive intermolecular and intramolecular cascade annulation pathways, leading to valuable compounds, such as iso-indolinones and N-substituted anthracene derivatives. A series of reaction parameters were probed, including solvent, stoichiometry, sterics and organolithium reagent choice, in order to understand the influences that limit such ring-closing pathways. With two viable reactivity options for the organolithium on the imine; namely, nucleophilic addition or lithium–bromide exchange, a surprising competitive nature was observed, where nucleophilic addition dominated, even under cryogenic conditions. Considering the most commonly used solvents for lithium–bromide exchange, tetrahydrofuran (THF) and diethyl ether (Et2O), contrasting reactivity outcomes were revealed with nucleophilic addition promoted in THF, while Et2O yielded almost double the conversion of cyclic products than in THF.

Preparation of 3-Hydroxyindolin-1-ones and o-Acylbenzamides. A Study of Ring-Chain Tautomerism

Nishio, Takehiko,Yamamoto, Hiroshi

, p. 883 - 892 (2007/10/02)

3-Hydroxyisoindolinones (ring form) as well as their chain tautomers, o-acylbenzamides, were prepared from the reactions of 3-benzalphthalide 1, 3-halophthalides 3, and o-acylbenzoic acids 6 or their esters 7 with amines 2, and those of phthalimides 4 wit

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