97989-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97989-89-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,8 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97989-89:
(7*9)+(6*7)+(5*9)+(4*8)+(3*9)+(2*8)+(1*9)=234
234 % 10 = 4
So 97989-89-4 is a valid CAS Registry Number.
97989-89-4Relevant academic research and scientific papers
CHIRAL SYNTHESIS OF THE DEF-RING SYSTEM OF NOGALAMYCIN
Kawasaki, Motoji,Matsuda, Fuyuhiko,Terashima, Shiro
, p. 2693 - 2696 (2007/10/02)
The DEF-ring system of nogalamycin (1), a potent antitumor antibiotic of the anthracycline family, was stereoselectively synthesized in an optically active form starting from readily available D-arabinose.