α-o-Toluidino-m-toluenesulfonic acid, also known as 2-Methyl-N-(2-methylphenylsulfamoyl)aniline, is an organic compound with the chemical formula C14H16N2O2S. It is a derivative of aniline, featuring a sulfonic acid group attached to a toluene ring and an amino group connected to another toluene ring. α-o-Toluidino-m-toluenesulfonic acid is characterized by its yellow crystalline appearance and is soluble in water. It is primarily used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes. Due to its chemical structure, α-o-Toluidino-m-toluenesulfonic acid exhibits specific reactivity and properties that make it valuable in the chemical industry for the creation of a variety of colorants.

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Basic information
1. Product Name: α-o-Toluidino-m-toluenesulfonic acid
2. Synonyms: α-o-Toluidino-m-toluenesulfonic acid
3. CAS NO:6661-53-6
4. Molecular Formula: C14H15NO3S
5. Molecular Weight: 277.3388
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6661-53-6.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: α-o-Toluidino-m-toluenesulfonic acid(CAS DataBase Reference)
10. NIST Chemistry Reference: α-o-Toluidino-m-toluenesulfonic acid(6661-53-6)
11. EPA Substance Registry System: α-o-Toluidino-m-toluenesulfonic acid(6661-53-6)
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: 6661-53-6(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 6661-53-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6661-53:
(6*6)+(5*6)+(4*6)+(3*1)+(2*5)+(1*3)=106
106 % 10 = 6
So 6661-53-6 is a valid CAS Registry Number.

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