6878-93-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6878-93-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,7 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6878-93:
(6*6)+(5*8)+(4*7)+(3*8)+(2*9)+(1*3)=149
149 % 10 = 9
So 6878-93-9 is a valid CAS Registry Number.
InChI:InChI=1/C19H23NO3/c1-20-9-8-19-11-13(22-2)5-6-14(19)15(20)10-12-4-7-16(23-3)18(21)17(12)19/h4,6-7,11,15,21H,5,8-10H2,1-3H3/t15-,19+/m0/s1
6878-93-9Relevant articles and documents
Synthesis of β-dihydrothebaine
Razdan,Portlock,Dalzell,Malmberg
, p. 3604 - 3606 (1978)
The authors have found that the reaction of thebaine with K/liquid NH3 gives a 1:1 mixture of 2 and 3 in 95% yield. It was also observed that treatment of phi-DHT (3) with K/liquid NH3 in the presence of a catalytic amount of Fe(NO3)3 x 9H2O7 gave a 1:1 mixture of 2 and 3 in 79% yield. These results suggest that an intermediate dianion 5 is formed which is protonated either at C5 or C7.
