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5-methoxy-3-methyl-1-phenyl-4-phenylazo-1H-pyrazole is a complex organic compound with the molecular formula C18H16N2O. It features a pyrazole ring, which is a five-membered aromatic ring containing two nitrogen atoms. The molecule has a methyl group (-CH3) at the 3-position and a methoxy group (-OCH3) at the 5-position of the pyrazole ring. Additionally, it has a phenyl group (C6H5) attached to the 1-position of the pyrazole ring and another phenylazo group (-N=N-C6H5) at the 4-position, which is a phenyl group connected to the pyrazole through a nitrogen-nitrogen double bond. 5-methoxy-3-methyl-1-phenyl-4-phenylazo-1H-pyrazole is known for its potential applications in the field of chemistry, particularly in the synthesis of dyes and pigments, due to its unique structure and properties.

4550-18-9

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4550-18-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4550-18-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,5 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4550-18:
(6*4)+(5*5)+(4*5)+(3*0)+(2*1)+(1*8)=79
79 % 10 = 9
So 4550-18-9 is a valid CAS Registry Number.

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