4-(2,4-dinitro-phenylazo)-3-methoxy-phenol is a complex organic compound with the molecular formula C13H9N3O5. It is characterized by a phenol backbone, which is substituted with a methoxy group at the 3-position and an azo group at the 4-position. The azo group is connected to a 2,4-dinitrophenyl ring, which contributes to the compound's color and reactivity. This chemical is often used as a chromogenic reagent in analytical chemistry for the detection and quantification of certain metal ions, particularly in the field of spectrophotometry. Its structure allows for specific interactions with metals, leading to color changes that can be measured and used to determine the concentration of the metal ions in a sample.

1696-41-9

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Basic information
1. Product Name: 4-(2,4-dinitro-phenylazo)-3-methoxy-phenol
2. Synonyms:
3. CAS NO:1696-41-9
4. Molecular Formula:
5. Molecular Weight: 318.246
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 4-(2,4-dinitro-phenylazo)-3-methoxy-phenol(CAS DataBase Reference)
10. NIST Chemistry Reference: 4-(2,4-dinitro-phenylazo)-3-methoxy-phenol(1696-41-9)
11. EPA Substance Registry System: 4-(2,4-dinitro-phenylazo)-3-methoxy-phenol(1696-41-9)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 1696-41-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 1696-41-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,9 and 6 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1696-41:
(6*1)+(5*6)+(4*9)+(3*6)+(2*4)+(1*1)=99
99 % 10 = 9
So 1696-41-9 is a valid CAS Registry Number.

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1696-59-9 2',4'-Dinitro-2,4-dimethoxy-azobenzol

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