220389-76-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220389-76-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,3,8 and 9 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 220389-76:
(8*2)+(7*2)+(6*0)+(5*3)+(4*8)+(3*9)+(2*7)+(1*6)=124
124 % 10 = 4
So 220389-76-4 is a valid CAS Registry Number.
220389-76-4Relevant articles and documents
Process for preparing 2-substituted 5-formylthiazoles
-
Page column 3, (2008/06/13)
2-substituted 5-formylthiazoles are prepared in an advantageous manner by reacting halogenomalonaldehydes in the presence of a solvent and a C1-compound of the formula (III) in which X represents oxygen or sulfur and R1is as defined in the description, the reaction mixture comprising less than 5% by weight of water.