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73682-83-4

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73682-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73682-83-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,6,8 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 73682-83:
(7*7)+(6*3)+(5*6)+(4*8)+(3*2)+(2*8)+(1*3)=154
154 % 10 = 4
So 73682-83-4 is a valid CAS Registry Number.

73682-83-4Downstream Products

73682-83-4Relevant articles and documents

REACTION OF THIOLSULFINATES WITH TRIHALOACETIC ANHYDRIDES. II. ADDITION OF SULFENYL TRIHALOACETATES TO OLEFINS

Morishita, Tsuyoshi,Furukawa, Naomichi,Oae, Shigeru

, p. 2539 - 2546 (1981)

Treatment of thiolsulfinates with trifluoro- or trichloroacetic anhydride at -20 deg C in the presence of various olefins in carbon tetrachloride afforded the corresponding β-trifluoro- or trichloroacetoxy sulfides in good yields.The β-trihaloacetoxy sulfides are considered to be resulted by the electrophilic addition of the sulfenyl trihaloacetates, formed as transient intermediates, to olefins.The addition takes place stereospecifically in trans manner and the regioselectivity for the addition with unsymmetrical olefins obeyed the Markownikoff orientation rule, except 3,3-dimethyl-1-butene which gave initially the anti-Markownikoff product 3 due to the steric hindrance, however the adduct 3 is readily converted to the Markownikoff product 22 upon heating.Since the addition is highly regioselective and stereospecific, this is a very convenient procedure for the syntheses of β-trihaloacetoxy sulfides.

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