90699-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90699-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,9 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90699-81:
(7*9)+(6*0)+(5*6)+(4*9)+(3*9)+(2*8)+(1*1)=173
173 % 10 = 3
So 90699-81-3 is a valid CAS Registry Number.
90699-81-3Relevant academic research and scientific papers
Thienopyrimidin-4-(3H)ones
Gakhar, H. K.,Gill, J. K.
, p. 432 - 433 (2007/10/02)
5,6-Dimethylthienopyrimidin-4(3H)-ones (V) have been synthesised by three new routes and their structures established by elemental analyses and PMR data.