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135522-23-5

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135522-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135522-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,5,2 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 135522-23:
(8*1)+(7*3)+(6*5)+(5*5)+(4*2)+(3*2)+(2*2)+(1*3)=105
105 % 10 = 5
So 135522-23-5 is a valid CAS Registry Number.

135522-23-5Upstream product

135522-23-5Downstream Products

135522-23-5Relevant articles and documents

Novel synthesis of naphthopyranoisoxazoles and versatile access to naphthopyranoisoxazolines

Liaskopoulos, Theodoros,Skoulika, Stavroula,Tsoungas, Petros G.,Varvounis, George

, p. 711 - 718 (2008)

2-(Alkenyloxy)naphthalene-1-carbaldehyde oximes are oxidized with potassium iodide, iodine and sodium bicarbonate directly to novel naphthopyranoisoxazoles. Naphthopyranoisoxazoles are also prepared from 2-(3-chloroallyloxy)naphthalene-1-carbaldehyde oxime or 2-(alkynyloxy) naphthalene-1-carbaldehyde oximes by oxidation with sodium hypochlorite and triethylamine. The oxidation of 2-(alkenyloxy)naphthalene-1-carbaldehyde oximes with sodium hypochlorite and triethylamine afforded novel naphthopyranoisoxazolines. The former reaction is tentatively proposed to occur via activation of the alkene side chain by means of an iodonium intermediate and either 1,3-dipolar interaction with a nitrile oxide side-group or cyclization with a hydroximic acid iodide side-group. Georg Thieme Verlag Stuttgart.

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