90661-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90661-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,6 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90661-57:
(7*9)+(6*0)+(5*6)+(4*6)+(3*1)+(2*5)+(1*7)=137
137 % 10 = 7
So 90661-57-7 is a valid CAS Registry Number.
90661-57-7Relevant academic research and scientific papers
SYNTHESIS OF THE NAPHTHALENECARBOXYLIC ACID DERIVATIVE OBTAINED FROM NEOCARZINOSTATIN (NCS): A STRUCTURE REVISION
Shibuya, Masayuki,Toyooka, Kouhei,Kubota, Seiju
, p. 1171 - 1174 (2007/10/02)
The structure of the naphthalenecarboxylic acid derivative obtained from neocarzinostatin (NCS) was revised as methyl 2-hydroxy-7-methoxy-5-methyl-1-naphthalenecarboxylate (2a) by its synthesis.
