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3-carboxy-5-(4-methylphenylazo)tropolone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

135345-74-3

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135345-74-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135345-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,3,4 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 135345-74:
(8*1)+(7*3)+(6*5)+(5*3)+(4*4)+(3*5)+(2*7)+(1*4)=123
123 % 10 = 3
So 135345-74-3 is a valid CAS Registry Number.

135345-74-3Downstream Products

135345-74-3Relevant academic research and scientific papers

Synthesis and Reactions of 3-Carboxytropolone. Conversion to Heterocycle-fused Troponoid Compounds

Zhang, Luo-Cheng,Imafuku, Kimiaki

, p. 717 - 720 (2007/10/02)

The haloform reaction of 3-acetyltropolone (1) afforded 3-carboxytropolone (2) which was treated with diazomethane to give 2-methoxy-3-methoycarbonyltropone (3a) and 2-methoxy-7-methoxycarbonyltropone (3b).The tropolone 2 reacted with hydrazine to afford

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