Cas 4651-88-1,3-Thiophenecarboxylic acid, 5-acetyl-2-(acetylamino)-4-methyl-, methyl ester

4651-88-1

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Basic information

Product Name: 3-Thiophenecarboxylic acid, 5-acetyl-2-(acetylamino)-4-methyl-, methyl ester
Synonyms: 2-Acetamino-4-methyl-5-acetyl-3-methoxycarbonyl-thiophen;5-Acetyl-2-acetylamino-4-methyl-thiophene-3-carboxylic acid methyl ester;2-Acetamino-3-methoxycarbonyl-4-methyl-5-acetyl-thiophen;
CAS NO:4651-88-1
Molecular Formula: C11H13NO4S
Molecular Weight: 255.29000
EINECS: N/A
Product Categories: N/A
Mol File: 4651-88-1.mol

Chemical Properties

Melting Point: 87.3 - 88.4 °C
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: 3-Thiophenecarboxylic acid, 5-acetyl-2-(acetylamino)-4-methyl-, methyl ester(CAS DataBase Reference)
NIST Chemistry Reference: 3-Thiophenecarboxylic acid, 5-acetyl-2-(acetylamino)-4-methyl-, methyl ester(4651-88-1)
EPA Substance Registry System: 3-Thiophenecarboxylic acid, 5-acetyl-2-(acetylamino)-4-methyl-, methyl ester(4651-88-1)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 4651-88-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4651-88-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,5 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4651-88:
(6*4)+(5*6)+(4*5)+(3*1)+(2*8)+(1*8)=101
101 % 10 = 1
So 4651-88-1 is a valid CAS Registry Number.

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4651-88-1Downstream Products

4651-88-1Relevant academic research and scientific papers

Synthesis of thiophene derivatives on soluble polymer-support using Gewald reaction

Zhang, Haiqing,Yang, Guichun,Chen, Jianian,Chen, Zuxing

, p. 3055 - 3059 (2007/10/03)

A variety of thiophene derivatives have been synthesized using poly(ethylene glycol) (PEG) as soluble polymer support. PEG reacted with cyanoacetic acid, DCC and DMAP in CHCl3 under microwave irradiation to give PEG-bound cyanoacetic ester 1. A mixture of 1, elemental sulfur, DIPEA and 2 carried out Gewald reaction under microwave irradiation to afford 3, which was acylated and treated with 1% KCN in methanol to give thiophene derivatives 6. This synthetic method is simple and mild, and the yields are moderate to high.

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