159021-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159021-55-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,0,2 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 159021-55:
(8*1)+(7*5)+(6*9)+(5*0)+(4*2)+(3*1)+(2*5)+(1*5)=123
123 % 10 = 3
So 159021-55-3 is a valid CAS Registry Number.
159021-55-3Relevant articles and documents
Chemistry of Indoloquinazoline: An Approach to the Marine Alkaloid Hinckdentine A
Billimoria, Adil D.,Cava, Michael P.
, p. 6777 - 6782 (1994)
The basic chemistry of indoloquinazoline (2) has been investigated for the first time.In addition, some attempts to elaborate 2 into the pentacyclic system of the marine alkaloid hinckdentine A (1A) are described.