90689-60-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90689-60-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,8 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90689-60:
(7*9)+(6*0)+(5*6)+(4*8)+(3*9)+(2*6)+(1*0)=164
164 % 10 = 4
So 90689-60-4 is a valid CAS Registry Number.
InChI:InChI=1/C20H16O10/c1-7-4-12(23)10(5-21)17-13(7)20(27)30-18-11(6-28-9(3)22)15(24)14(19(25)26)8(2)16(18)29-17/h4-5,23-24H,6H2,1-3H3,(H,25,26)
90689-60-4Relevant articles and documents
The Identification of Further New Depsidones in the Lichen Parmelia notata
Elix, John A.,Lajide, Labunmi
, p. 857 - 866 (2007/10/02)
Two new depsidones, 8-hydroxy-3-methoxy-1,6-dimethyl-11-oxo-11H-dibenzodioxepin-7-carboxylic acid (subnotatic acid) (5) and 8-hydroxy-3-methoxy-1,6,9-trimethyl-11-oxo-11H-dibenzodioxepin-7-carboxylic acid (isonotatic acid) (7), have be