19857-81-9 Usage
General Description
1,3,6,8-tetrachloro-9H-fluorene-2,7-diamine, also known as pyrazole, is a chemical compound with a molecular formula C34H36Cl4N4. It is a synthetic organic compound that is widely used in the production of dyes and pigments. It is a white crystalline solid that is soluble in organic solvents. 1,3,6,8-tetrachloro-9H-fluorene-2,7-diamine is known for its strong coloring properties and is often used as a dye intermediate and in the production of fluorescent dyes. It is also used in the synthesis of pharmaceuticals and agrochemicals. Additionally, pyrazole is known for its potential toxicity and environmental hazards, and therefore should be handled with caution.
Check Digit Verification of cas no
The CAS Registry Mumber 19857-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,5 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19857-81:
(7*1)+(6*9)+(5*8)+(4*5)+(3*7)+(2*8)+(1*1)=159
159 % 10 = 9
So 19857-81-9 is a valid CAS Registry Number.
