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157774-23-7

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157774-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157774-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,7 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157774-23:
(8*1)+(7*5)+(6*7)+(5*7)+(4*7)+(3*4)+(2*2)+(1*3)=167
167 % 10 = 7
So 157774-23-7 is a valid CAS Registry Number.

157774-23-7Relevant articles and documents

Synthesis of (3-Hydroxyadamantan-1-yl)methanols

Ivleva,Pogulyaiko,Klimochkin, Yu. N.

, p. 1294 - 1300 (2018/11/21)

A convenient procedure has been developed for the synthesis of (3-hydroxyadamantan-1-yl)-methanols on the basis of nitroxylation of adamantan-1-ylmethanols with fuming nitring acid and subsequent reduction of intermediate nitric acid esters with hydrazine hydrate. The title diols have also been obtained by the reduction of 1-nitroxy-3-(nitroxymethyl)adamantanes. The nitroxylation process is accompanied by oxidation with the formation of substituted adamantane-1-carboxylic acids.

SYNTHESIS AND HYDROLYTIC TRANSFORMATIONS OF NITROXY DERIVATIVES OF HOMOADAMANTANE PROTOADAMANTANE AND BICYCLONONANE

Klimochkin, Yu. N.,Zhilkina, E. O.,Abramov, O. V.,Moiseev, I. K.

, p. 1126 - 1131 (2007/10/02)

Mono- and dinitroxy derivatives of homoadamantane, protoadamantane, and bicyclononane were synthesized by nitroxylation.A study was carried out on the reactivity of these hydrocarbons relative to nitric acid and the hydrolytic transformations of the products obtained.The acid-catalyzed skeletal rearrangement of 3,6-dinitroxyhomoadamantane to 3-nitroxymethyl-1-adamantanol proceeds with retention of the substituent at the carbon atom, at which the carbenium ion is generated.

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