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125741-54-0

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125741-54-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125741-54-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,7,4 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 125741-54:
(8*1)+(7*2)+(6*5)+(5*7)+(4*4)+(3*1)+(2*5)+(1*4)=120
120 % 10 = 0
So 125741-54-0 is a valid CAS Registry Number.

125741-54-0Relevant articles and documents

METHOD FOR PREPAREING 1,3,4-OXADIAZOL UNDER SOLVENT-FREE CONDITION

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Paragraph 0069-0073; 0269-0270, (2017/02/24)

The present invention relates to a synthesis method of 1,3,4-oxadiazol, comprising: 1) under a solvent-free condition and by means of a mechanical pulverization method, making a hydrazide compound react with an aldehyde compound and thereby synthesizing a N-acylhydrazone compound; and 2) under a solvent-free condition, adding an iodine-based oxidizing agent to the N-acylhydrazone compound to synthesize 1,3,4-oxadiazol via oxidative cyclization. The solventless synthesis method of 1,3,4-oxadiazol according to the present invention is easy to perform and handle, and has the advantage of synthesizing 1,3,4-oxadiazol at high selectivity and yield. Also, the solventless synthesis method of the present invention can prevent the formation of side products caused by the minute amount of water that usually remains in solvents, and can further prevent synthesized intermediates from being converted back into the starting materials by the water.COPYRIGHT KIPO 2016

Phthalides by rhodium-catalyzed ketone hydroacylation

Phan, Diem H. T.,Kim, Byoungmoo,Dong, Vy M.

supporting information; experimental part, p. 15608 - 15609 (2010/01/30)

(Chemical Equation Presented) Phthalides are biologically relevant five-membered lactones found in herbs, fruits, and vegetables. Herein we communicate the first atom-economical approach to phthalides by using enantioselective ketone hydroacylation. In the presence of Rh[(Duanphos)]X (X = NO3, OTf, OMs), various 2-ketobenzaldehydes undergo intramolecular hydroacylation to produce phthalide products in good yields and 92-98% ee's. Our study highlights the key role counterions play in controlling both reactivity and enantioselectivity. A concise asymmetric total synthesis of the celery extract (S)-(-)-3-n-butylphthalide is also presented.

Synthesis and characterization of iron(III) complexes of salicylaldehyde 4-methoxybenzoyl hydrazone

Dey, Kamalendu,Bandyopadhyay, Debasish,Bhattacharya, Prabir Kumar,Chakraborty, Kartick

, p. 107 - 111 (2007/10/03)

Iron(III) complexes of salicylaldehyde 4-methoxybenzoyl hydrazone, (H2smbhon), have been isolated and the reactions of [Fe(smbhon) (Cl) (H2O)]2 with SnCl2 and CH3CN are discussed. These complexes have

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