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84209-24-5

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84209-24-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84209-24-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,2,0 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 84209-24:
(7*8)+(6*4)+(5*2)+(4*0)+(3*9)+(2*2)+(1*4)=125
125 % 10 = 5
So 84209-24-5 is a valid CAS Registry Number.

84209-24-5Relevant articles and documents

Hypocholesterolemic activity of some novel azetidin-2-ones in diet and diabetes induced hypercholesterolemia in rats

Goel,Thind,Bal,Mahajan,Kulkarni

, p. 369 - 374 (2007/10/03)

Some novel substituted azetidin-2-ones (5-8) were synthesized via {2 + 2} cycloaddition reactions of imines and ketenes and evaluated for their ability to prevent diet and diabetes induced hypercholesterolemia. The test compounds 5a and 7a significantly (p a dose dependent manner. Compound 5a also raised the high density lipoprotein-cholesterol levels in chronic diet models by peanut oil (5.5%), cholesterol (1.5%) and cholic acid (0.5%). In a diabetes induced model of hypercholesterolemia, the test compounds were evaluated for preventing diabetes-induced hypercholesterolemia (protocol 1) as well as for lowering post diabetic hypercholesterolemia (protocol 2). Test compounds 5a-g and 7a-d significantly (p a greater reduction in protocol 1 as compared with protocol 2. Based on SAR studies, the substituents that favor hypocholesterolemic activity around the azetidin-2-one nucleus are discussed and a possible mechanism of action is proposed on the basis of their differential effects in two protocols of diabetes-induced hypercholesterolemia.

Diastereoselective synthesis of bis-beta-lactams

Bose, Ajay K.,Womelsdorf, John F.,Krishnan, Lalitha,Urbanczyk-Lipkowska, Zofia,Shelly, Dennis C.,Manhas, Maghar S.

, p. 5379 - 5390 (2007/10/02)

Schiff bases derived from (±)-4-aldehydo-2- -azetidinones react with acid chlorides and triethylamine to produce (±)-bis-β-lactams in a diastereoselective fashion. The steric course of β-lactam fonnation was determined in one case by using chiral HPLC sep

N,N-DIMETHYLPHOSPHORAMIDIC DICHLORIDE: A CONVENIENT REAGENT FOR THE PREPARATION OF β-LACTAMS FROM ACETIC ACIDS AND IMINES

Cossio, Fernando P.,Ganboa, Inaki,Garcia, Jesus M.,Lecea, Begona,Palomo, C.

, p. 1945 - 1948 (2007/10/02)

A convenient reagent for the preparation of β-lactams from acetic acids and imines is described.A new route to α-keto-β-lactams from 3-bis(ethylthio)β-lactams is also reported.Reaction of 4-acethyl-β-lactams with diazomethane is also made.

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