18904-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18904-17-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,0 and 4 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 18904-17:
(7*1)+(6*8)+(5*9)+(4*0)+(3*4)+(2*1)+(1*7)=121
121 % 10 = 1
So 18904-17-1 is a valid CAS Registry Number.
18904-17-1Relevant academic research and scientific papers
Synthesis of 1-Substituted 5-Cyanouracils
Wolfbeis, Otto S.
, p. 182 - 185 (2007/10/02)
Condensation of (cyanoacetyl)urea (1) with aniline and trimethoxymethane affords (3-anilino-2-cyanoacryloyl)urea (2a), which thermally cyclizes to form strongly fluorescent 5-cyano-1-phenyluracil (3a).By using 2-aminopyridine or trimethoxymethane, other u
