135768-83-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135768-83-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,7,6 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 135768-83:
(8*1)+(7*3)+(6*5)+(5*7)+(4*6)+(3*8)+(2*8)+(1*3)=161
161 % 10 = 1
So 135768-83-1 is a valid CAS Registry Number.
InChI:InChI=1/C20H26O3/c1-18-7-6-15-14-4-3-13(21)10-12(14)2-5-16(15)19(18)8-9-20(18,23)17(22)11-19/h3-4,10,15-17,21-23H,2,5-9,11H2,1H3/t15-,16-,17+,18+,19?,20-/m1/s1
135768-83-1Relevant articles and documents
Cycloaddition-fragmentation route to 14β-allylestrone and the derived 14α,17α-ethano analogue of estriol
Bull, James R.,Mountford, Pia G.,Kirsch, Gerald,Neef, Guenter,Mueller-Fahrnow, Anke,Wiechert, Rudolf
, p. 6363 - 6376 (1994)
3-Methoxyestra-1,3,5(10),14,16-pentaen-17-yl acetate (1) undergoes efficient boron trifluoride catalysed cycloaddition at 20°C with acrolein.