138228-39-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138228-39-4 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, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138228-39:
(8*1)+(7*3)+(6*8)+(5*2)+(4*2)+(3*8)+(2*3)+(1*9)=134
134 % 10 = 4
So 138228-39-4 is a valid CAS Registry Number.
138228-39-4Relevant academic research and scientific papers
Synthesis of (3S,4S)-3,4-dihydroxyprolines from L-tartaric acid
Arakawa,Yoshifuji
, p. 2219 - 2224 (2007/10/02)
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.
