90689-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90689-55-7 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, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90689-55:
(7*9)+(6*0)+(5*6)+(4*8)+(3*9)+(2*5)+(1*5)=167
167 % 10 = 7
So 90689-55-7 is a valid CAS Registry Number.
90689-55-7Relevant 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