640-50-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 640-50-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,4 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 640-50:
(5*6)+(4*4)+(3*0)+(2*5)+(1*0)=56
56 % 10 = 6
So 640-50-6 is a valid CAS Registry Number.
640-50-6Relevant academic research and scientific papers
190. 1,2-Epoxycarotinoide. Synthese der 1',2'-Epoxide von β,ψ- und ε,ψ-Carotin (=γ- bzw. δ-Carotin)
Pfander, Hanspeter,Kamber, Matthias
, p. 1792 - 1796 (2007/10/02)
The synthesis of the naturally occuring 1',2'-epoxy-1',2'-dihydro-β,ψ-carotene and 1',2'-epoxy-1',2'-dihydro-ε,ψ-carotene is described.
