138505-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138505-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,0 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138505-91:
(8*1)+(7*3)+(6*8)+(5*5)+(4*0)+(3*5)+(2*9)+(1*1)=136
136 % 10 = 6
So 138505-91-6 is a valid CAS Registry Number.
InChI:InChI=1/C23H38O7.Na/c1-4-13(2)23(29)30-20-11-17(25)9-15-6-5-14(3)19(22(15)20)8-7-16(24)10-18(26)12-21(27)28;/h5-6,13-20,22,24-26H,4,7-12H2,1-3H3,(H,27,28);/q;+1/p-1/t13?,14-,15?,16+,17+,18+,19-,20-,22-;/m0./s1
138505-91-6Relevant academic research and scientific papers
Bone, Elizabeth A.,Davidson, Alan H.,Lewis, Christopher N.,Todd, Richard S.
, p. 3388 - 3393 (1992)
The total synthesis of the novel hydroxylated HMG-CoA reductase inhibitor dihydroeptastasin (7) is described.The key C-3 hydroxyl group is introduced via Baeyer-Villiger reaction on the methyl ketone 17 which is obtained in three high-yielding steps from