72785-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72785-19-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,8 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 72785-19:
(7*7)+(6*2)+(5*7)+(4*8)+(3*5)+(2*1)+(1*9)=154
154 % 10 = 4
So 72785-19-4 is a valid CAS Registry Number.
InChI:InChI=1/C18H19NO4/c1-19-6-5-18-11-8-3-4-10(21-2)14(11)23-17(18)13(20)16-15(22-16)12(18)9(19)7-8/h3-4,9,12,15-17H,5-7H2,1-2H3/t9-,12+,15?,16?,17-,18+/m0/s1
72785-19-4Relevant articles and documents
Stereospecific synthesis of codeine 7,8-oxide and codeinone 7,8-oxide
Uba,Miyata,Watanabe,Hirobe
, p. 2257 - 2258 (1979)
Codeine was oxidized to codeinone 7,8-oxide (2) by hydrogen peroxide. Stereospecific reduction of 2 by sodium borhydride afforded codeine 7,8-oxide (3). The configuration of 3 was confirmed by X-ray analysis.