136337-89-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136337-89-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,3 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 136337-89:
(8*1)+(7*3)+(6*6)+(5*3)+(4*3)+(3*7)+(2*8)+(1*9)=138
138 % 10 = 8
So 136337-89-8 is a valid CAS Registry Number.
136337-89-8Relevant articles and documents
Synthesis of some new pyridophenazine-5,12-diones and 5,11-dioxo-5b,10-diazapyridofluorenes and their biological activity
Yanni, A. S.
, p. 808 - 810 (2007/10/02)
6-Arylamino-7-chloroquinoline-5,8-diones (II) interact with sodium azide in DMF to give pyridophenazine-5,12-diones (VII).The corresponding 6-cycloalkylamino-7-chloroquinoline-5,8-diones (VIII) undergone analogous transformation to give 5,11-dioxo-
