1990-01-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1990-01-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,9 and 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1990-01:
(6*1)+(5*9)+(4*9)+(3*0)+(2*0)+(1*1)=88
88 % 10 = 8
So 1990-01-8 is a valid CAS Registry Number.
InChI:InChI=1/C20H26O8/c1-7-4-10(21)15(24)18(3)9(7)5-11-19-6-27-20(26,17(18)19)14(23)8(2)12(19)13(22)16(25)28-11/h4,8-9,11-15,17,22-24,26H,5-6H2,1-3H3/t8-,9+,11-,12-,13-,14-,15-,17-,18-,19+,20+/m1/s1
1990-01-8Relevant academic research and scientific papers
Synthetic studies on quassinoids: Total synthesis of (±)-glaucarubolone and (±)-holacanthone
Fleck,Grieco
, p. 1813 - 1816 (2007/10/02)
The first total synthesis of (±)-glaucarubolone (1) and (±)-holacanthone (2) is detailed which commences with tetracyclic alcohol 3.