299421-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 299421-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,9,4,2 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 299421-99:
(8*2)+(7*9)+(6*9)+(5*4)+(4*2)+(3*1)+(2*9)+(1*9)=191
191 % 10 = 1
So 299421-99-1 is a valid CAS Registry Number.
299421-99-1Relevant articles and documents
The Synthesis of Some Thiazolo- and Oxazolo-pyrimidines and Pyrimidinylureas. II
Hurst, Derek T.,Atcha, Shahid,Marshall, Kristina L.
, p. 129 - 134 (2007/10/02)
The reaction of some 5-acylaminopyrimidines, having 4-oxo groups, with phosphorus oxychloride or phosphorus pentasulfide leads to the oxazolo- or thiazolo-pyrimidines respectively.The condensation of amidinothiourea with pentane-2,4-dione leads to