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94538-18-8

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94538-18-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94538-18-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,5,3 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 94538-18:
(7*9)+(6*4)+(5*5)+(4*3)+(3*8)+(2*1)+(1*8)=158
158 % 10 = 8
So 94538-18-8 is a valid CAS Registry Number.

94538-18-8Relevant articles and documents

Investigations on Benzothiirene

Meier, Herbert,Konnerth, Ursula,Graw, Sylvia,Echter, Toni

, p. 107 - 126 (2007/10/02)

Thermolysis and photolysis of 1,2,3-benzothiadiazole 10c furnish the products 11c - 15c. 13C-labelling experiments demonstrate that an intermediate benzothiirene 1c is not formed.Isotopomeric reaction products are due to H-shifts.Electron withdrawing ester groups in 6-position enable the ring closure to the substituted benzothiirenes 1d, e on the photochemical but not on the thermal route.A proof is given by an extensive study of the disulfides 14d, e, 14d', e', and 14d'', e'', generated in the thermolysis, photolysis and by an independent procedure.The results are based on 13C and 1H NMR measurements.Unequivocal signal correlations were made by deuterations and heteronuclear double resonances.

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