89808-04-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89808-04-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,8,0 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 89808-04:
(7*8)+(6*9)+(5*8)+(4*0)+(3*8)+(2*0)+(1*4)=178
178 % 10 = 8
So 89808-04-8 is a valid CAS Registry Number.
89808-04-8Relevant articles and documents
SYNTHESIS OF 2-AMINO-3-ETHOXYBENZENETHIOL AND ITS CONVERSION INTO 4H-1,4-BENZOTHIAZINES
Gupta, Radha Raman,Kumar, Rakesh
, p. 87 - 91 (2007/10/02)
Synthesis of 2-amino-3-ethoxybenzenethiol and 5-ethoxy-4H-1,4-benzothiazines is reported for the first time.Synthesis of 4H-1,4-benzothiazines involves the condensation and oxidative cyclization of 2-amino-3-ethoxybenzenethiol with β-diketones in DMSO.
