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157896-18-9

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157896-18-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157896-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,8,9 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157896-18:
(8*1)+(7*5)+(6*7)+(5*8)+(4*9)+(3*6)+(2*1)+(1*8)=189
189 % 10 = 9
So 157896-18-9 is a valid CAS Registry Number.

157896-18-9Downstream Products

157896-18-9Relevant articles and documents

First Completely Chemical Synthesis of 5-Formyltetrahydropteroyl>poly-γ-L-glutamic Acid Derivatives

Fitzhugh, Anthony L.,Akee, Rhone K.,Ruei, Faith C.,Wu, Jerry,Klose, John R.,Chabner, Bruce A.

, p. 897 - 902 (2007/10/02)

The synthesis of (6S)-N5-formyl-5,6,7,8-tetrahydropteroyl-di-, tri-, tetra- and -penta-γ-L-glutamic acid derivatives 9a-d has been achieved for the first time through a three-step sequence of chemical reactions.The process involves converting

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