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169297-54-5

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169297-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169297-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,2,9 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 169297-54:
(8*1)+(7*6)+(6*9)+(5*2)+(4*9)+(3*7)+(2*5)+(1*4)=185
185 % 10 = 5
So 169297-54-5 is a valid CAS Registry Number.

169297-54-5Relevant articles and documents

Synthesis of - and Lysines

Tsuzuki, Hirohisa,Mashimo, Takuya,Mukumoto, Mamoru,Mataka, Shuntaro,Udagawa, Jun,Tashiro, Masashi

, p. 2346 - 2360 (2007/10/03)

Starting from readily available cyclohexanone (1), synthesis of the title - and lysines (11) and (18) is described.Although direct incorporation of an amino or phthalimide group into the 2-bromohexanoic acid (5), which was derived from 1 in five steps. leading to 11 was unsuccessful due to hydrogen-deuterium scrambling, compound (11) was obtained in 86percent deuterium content via incorporation of an azido group and subsequent hydrogenation.Furthermore, compound (18) having 99percent deuterium content could be prepared by acid-catalysed deuterium exchange of 1 as a key-step.

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