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3-carbomethoxy-5-hexyl-4,6-dimethoxy-2-propylbenzoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

640734-50-5

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640734-50-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 640734-50-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,7,3 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 640734-50:
(8*6)+(7*4)+(6*0)+(5*7)+(4*3)+(3*4)+(2*5)+(1*0)=145
145 % 10 = 5
So 640734-50-5 is a valid CAS Registry Number.

640734-50-5Upstream product

640734-50-5Relevant academic research and scientific papers

A total synthesis of the antibiotic DB-2073

Covarrubias-Zuniga, Adrian,Avila-Zarraga, Jose G.,Arias Salas, David

, p. 3173 - 3181 (2007/10/03)

A convergent aromatic annulation strategy based on the Michael addition of the dimethyl-1,3-acetonedicarboxylate 1 anion to 2-hexynal 2, followed by a regiocontrolled Dieckmann-type cyclization, has been applied to a total synthesis of the antibiotic, DB-2073 I. This tandem annulation reaction generates the fully substituted aromatic intermediate 3, which was transformed by a five-step sequence to I.

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