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330623-29-5

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330623-29-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 330623-29-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,0,6,2 and 3 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 330623-29:
(8*3)+(7*3)+(6*0)+(5*6)+(4*2)+(3*3)+(2*2)+(1*9)=105
105 % 10 = 5
So 330623-29-5 is a valid CAS Registry Number.

330623-29-5Relevant articles and documents

The synthesis of ventilone A

Piggott, Matthew J.,Wege, Dieter

, p. 749 - 754 (2007/10/03)

2-Amino-3,6-dimethoxy-4,5-methylenedioxybenzoic acid (12) was prepared from 1,4-dimethoxy-2,3-methylenedioxybenzene (8) via the isatin (11). The benzyne generated from (12) was intercepted with 3-acetyl-2-ethoxy-4-[(4-methoxyphenoxy)methyl]furan (4) to give the naphthol (27), which on treatment with ceric ammonium nitrate gave the dimethyl ether of ventilone A (29). Demethylation with boron tribromide then afforded ventilone A (1). CSIRO 2000.

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