138228-54-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138228-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,2,2 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138228-54:
(8*1)+(7*3)+(6*8)+(5*2)+(4*2)+(3*8)+(2*5)+(1*4)=133
133 % 10 = 3
So 138228-54-3 is a valid CAS Registry Number.
138228-54-3Relevant academic research and scientific papers
Arakawa,Yoshifuji
, p. 2219 - 2224 (1991)
Natural (2S,3S,4S)-3,4-dihydroxyproline (1) and the new (2R,3S,4S)-isomer (7) have been synthesized from L-tartaric acid via cyanosilylation of the cyclic Schiff base.
