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75697-87-9

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75697-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75697-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,6,9 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 75697-87:
(7*7)+(6*5)+(5*6)+(4*9)+(3*7)+(2*8)+(1*7)=189
189 % 10 = 9
So 75697-87-9 is a valid CAS Registry Number.

75697-87-9Downstream Products

75697-87-9Relevant articles and documents

7-Alkylation and 7-Sulphonylation of 5,6-Dihydroimidazolo-thiazoles

Acheson, R. Morrin,Cooper, Martin W.,Cox, Ian R.

, p. 1773 - 1778 (2007/10/02)

Reinvestigation of the alkylation of 3-phenyl-5,6-dihydroimidazolothiazole has shown that methylation occurs exclusively at the 7-position, and that the free base is readily solvolysed to a mixture of 1-methylimidazolidin-2-one, 1-methylimidazolidine-2-thione, and diphenacyl sulphide and disulphide. 3-Methyl-5,6-dihydroimidazolothiazole with methane- and arene-sulphonyl chlorides gave the corresponding 7-sulphonylthiazolium chlorides.On heating, these rearranged to 3-(2-chloroethyl)-4-methyl-3-aryl (or alkyl)sulphonylimido-2,3-dihydrothiazoles.The 7-(4-chlorophenylsulphonyl) derivative lost this substituent with aqueous base while concentrated aqueous ammonia attacked the 7a-position leading to a 3--2-imino-4-methyl-2,3-dihydrothiazole.

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