13186-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13186-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,8 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 13186-17:
(7*1)+(6*3)+(5*1)+(4*8)+(3*6)+(2*1)+(1*7)=89
89 % 10 = 9
So 13186-17-9 is a valid CAS Registry Number.
13186-17-9Relevant articles and documents
RETRO CAROTENOIDS WITH SUBSTITUTED 2,5-OXA-BICYCLOHEPTANE END GROUPS
Aareskjold, Kare,Kayser, Hartmut,Liaaen-Jensen, Synnove
, p. 4541 - 4544 (2007/10/02)
BF3-mediated formation of a 2,5-oxygen bridge from carotenoids with 2-hydroxy-β-type end groups accompanied by dehydrogenation and retro shift of the polyene system is reported.The configuration of the Δ6,6' double bonds are established by 1H NMR.
