86998-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 86998-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,6,9,9 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 86998-99:
(7*8)+(6*6)+(5*9)+(4*9)+(3*8)+(2*9)+(1*9)=224
224 % 10 = 4
So 86998-99-4 is a valid CAS Registry Number.
86998-99-4Relevant academic research and scientific papers
Studies on Fused-ring Mesoionic Thiazolothiazolopyrimidine System
Talukdar, P. B.,Sengupta, S. K.,Datta, A. K.
, p. 243 - 248 (2007/10/02)
Cyclodehydration of 5-carboxymethylmercaptothiazolopyrimidine-7(6H)-ones (IVa - f) has been studied.IVa - d readily afford new fused-ring mesoionic systems (V) with acetic anhydride-pyridine mixture.IVe, f fail to give pure products under similar t
