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75189-22-9

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75189-22-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75189-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,1,8 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 75189-22:
(7*7)+(6*5)+(5*1)+(4*8)+(3*9)+(2*2)+(1*2)=149
149 % 10 = 9
So 75189-22-9 is a valid CAS Registry Number.

75189-22-9Relevant articles and documents

Cyclization of Non-tautomerizing anti-α-Aminohydrazones into N-Aminoimidazolidines

Gnichtel, Horst,Belkien, Lutz,Totz, Wolfgang,Wawretschek, Lothar

, p. 1016 - 1027 (2007/10/02)

The α-aminoisobutyrophenone phenylhydrazones 3a-h have been prepared and their anti-configuration determined UV spectroscopically.Cyclization of 3 with phosgene yields the hexahydrotetrazine derivatives 5 which react with water to give the 3-anilino-4-hyd

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