5,7-Dichloro-4-hydroxy-quinoline-3-carboxylic acid hydrazide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 127720-05-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,7,2 and 0 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 127720-05: (8*1)+(7*2)+(6*7)+(5*7)+(4*2)+(3*0)+(2*0)+(1*5)=112 112 % 10 = 2 So 127720-05-2 is a valid CAS Registry Number.