139025-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139025-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,2 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139025-21:
(8*1)+(7*3)+(6*9)+(5*0)+(4*2)+(3*5)+(2*2)+(1*1)=111
111 % 10 = 1
So 139025-21-1 is a valid CAS Registry Number.
139025-21-1Relevant articles and documents
Synthesis of (-)-δ-N-Normethylskytanthine
Cid, M. M.,Eggnauer, U.,Weber, H. P.,Pombo-Villar, E.
, p. 7233 - 7236 (2007/10/02)
(-)-δ-N-Normethylskytanthine (1) has been synthsised from (1R,4R,1'S)-2-(phenylethyl)-2-azabicyclohept-5-ene (2) which undergoes a ketene-amino-Claisen rearrangement by reaction with dichloroketene to generate (1S,6R,1'S)-3-(phenylethyl)-5,5-dichlo