2503-33-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2503-33-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,0 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2503-33:
(6*2)+(5*5)+(4*0)+(3*3)+(2*3)+(1*3)=55
55 % 10 = 5
So 2503-33-5 is a valid CAS Registry Number.
2503-33-5Relevant academic research and scientific papers
SYNTHESE DE L'ACIDE 3-(3,6-DIOXOPIPERAZIN-2-YL) PROPANOIQUE
Jerumanis, Stanislas,Lefebvre, Jean
, p. 127 - 130 (2007/10/02)
The 3-(3,6-dioxopiperazin-2-yl) propanoic acid (8) was synthesized from L-5-methyl glutamate (1) and ethyl glycinate.The regioselectivity was controled by using t-BOC-ON and EEDQ.