99011-92-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99011-92-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,0,1 and 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99011-92:
(7*9)+(6*9)+(5*0)+(4*1)+(3*1)+(2*9)+(1*2)=144
144 % 10 = 4
So 99011-92-4 is a valid CAS Registry Number.
99011-92-4Relevant articles and documents
2-Arylamino-thiophene-3-carboxylic Acid Derivatives
Schaefer, H.,Jablokoff, H.,Hentschel, M.,Gewald, K.
, p. 917 - 923 (2007/10/02)
The title compounds 3 are synthesized by reaction of 2-amino-thiophene-3-carboxylic acid derivatives 1 with anilines.The nucleophilic 5-position in 3 allowed the synthesis of 5-aryliden-Δ3-thiolen-2-one-imines 5, 6 and the oxidative coupling to
