1-(2-Carboxy-phenyl)-2-tosyl-hydrazin, also known as 2-tosyl-1-(2-carboxyphenyl)hydrazine, is an organic compound with the chemical formula C14H14N2O4S. It is a derivative of hydrazine, featuring a phenyl ring with a carboxylic acid group at the 2-position and a tosyl group (tosyl = toluene-4-sulfonyl) at the 2-position of the hydrazine moiety. 1-(2-Carboxy-phenyl)-2-tosyl-hydrazin is often used as a synthetic intermediate in the preparation of various pharmaceuticals and organic compounds due to its reactivity and functional group diversity. It is typically synthesized through the reaction of 2-carboxyphenylhydrazine with tosyl chloride in the presence of a base. The compound is a white crystalline solid and is sensitive to moisture, requiring storage under dry conditions.

5204-18-2

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Basic information
1. Product Name: 1-(2-Carboxy-phenyl)-2-tosyl-hydrazin
2. Synonyms:
3. CAS NO:5204-18-2
4. Molecular Formula:
5. Molecular Weight: 306.342
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: 1-(2-Carboxy-phenyl)-2-tosyl-hydrazin(CAS DataBase Reference)
10. NIST Chemistry Reference: 1-(2-Carboxy-phenyl)-2-tosyl-hydrazin(5204-18-2)
11. EPA Substance Registry System: 1-(2-Carboxy-phenyl)-2-tosyl-hydrazin(5204-18-2)
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: 5204-18-2(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 5204-18-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,0 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5204-18:
(6*5)+(5*2)+(4*0)+(3*4)+(2*1)+(1*8)=62
62 % 10 = 2
So 5204-18-2 is a valid CAS Registry Number.

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