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122717-93-5

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122717-93-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 122717-93-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,7,1 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 122717-93:
(8*1)+(7*2)+(6*2)+(5*7)+(4*1)+(3*7)+(2*9)+(1*3)=115
115 % 10 = 5
So 122717-93-5 is a valid CAS Registry Number.

122717-93-5Relevant articles and documents

Thermal rearrangement of 1,3-thiazolidine sulfoxides: Thiolsulfinate and thioaldehyde intermediates

Hahn, Hoh-Gyu,Nam, Kee Dal,Mah, Heduck

, p. 271 - 276 (2007/10/03)

Stereospecific ring opening of the sulfoxides cis-13 and trans-14 in refluxing toluene gave the corresponding sulfenic acids 9, 10 intermediates respectively. The sulfenic acid 9 dimerized to the thiolsulfinate 17 by dual function of the sulfenic acid as S-nucleophile/S-electrophile with loss of water while the sulfenic acid 10 was unchanged. The stereospecific recyclization of 10 to the parent sulfoxide 14 increases the higher pi- electron density of the double. The thermolysis of the thiolsulfinate 17 gave the transient sulfenic acid 9, which dimerized again to repeat the process and unisolable thioaldehyde 21. The thioaldehyde 21 was converted to either pyrrole 15 by the action of a sulfinic acid 20 catalyst formed inevitably by hydrolysis of 17 under the reaction conditions, or thiazole 18 under neutral conditions. In these rearrangements, the amide carbonyl group facilitated the elimination of a neighboring hydrogen.

Rearrangement of 1,3-Thiazolidine Sulfoxides

Mah, He Duck,Lee, Wha Suk

, p. 1447 - 1451 (2007/10/02)

Oxidation of 1,3-thiazolidines 3 gave a mixture of cis- and trans-sulfoxides 4 and 5, major and minor, respectively.In the presence of an acid catalyst both the cis and trans sulfoxides underwent ring expansion reaction to produce dihydro-1,4-thiazines 2

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