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21729-98-6

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21729-98-6 Usage

Uses

Methylcyanocarbamate is an impurity of Albendazole (A511610), an anthelmintic drug. (Albendazole Impurity 7)

Check Digit Verification of cas no

The CAS Registry Mumber 21729-98-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,2 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21729-98:
(7*2)+(6*1)+(5*7)+(4*2)+(3*9)+(2*9)+(1*8)=116
116 % 10 = 6
So 21729-98-6 is a valid CAS Registry Number.
InChI:InChI=1/C3H4N2O2/c1-7-3(6)5-2-4/h1H3,(H,5,6)

21729-98-6SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name Methylcyanocarbamate

1.2 Other means of identification

Product number -
Other names methyl cyanocarbamate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:21729-98-6 SDS

21729-98-6Relevant articles and documents

Preparation method of albendazole

-

Paragraph 0057-0058, (2020/09/09)

The invention discloses a preparation method of albendazole, which comprises the following steps of: dissolving 4-propylthio-o-phenylenediamine in methanol, cooling, keeping the temperature at 0-5 DEGC, slowly dropwise adding cyanogen chloride for reaction under the condition of uniform stirring, and regulating and keeping the pH value at 4-5 in the process; heating to 35-45 DEG C after dropwiseadding is finished, carrying out heat preservation for 1-2 hours, then carrying out atmospheric distillation to recover methanol to obtain a solid-liquid mixed aqueous solution, and carrying out cooling, filtering and drying to obtain 6-propylthio-2-amino-1-hydrogen-benzo [d] imidazole; adding the obtained product into methanol, stirring, cooling, maintaining the temperature at 5-10 DEG C, slowlydropwise adding methyl chloroformate, and adjusting and maintaining the pH value at 6-7; after dropwise adding is finished, heating to 35-45 DEG C, keeping the temperature for 1-2 hours, distilling atnormal pressure to recover methanol, cooling to 15-20 DEG C, and performing filtering and drying to obtain an albendazole product. The method has the advantages of mild process conditions, low cost of used raw materials, water saving, strong reaction activity, good selectivity, high product yield and good product quality.

Synthesis and reactions of some 5(6)-(1-adamantyl)benzimidazoles

Zurabishvili,Lomidze,Samsoniya,Wesquet,Kazmaier

experimental part, p. 941 - 949 (2009/05/26)

4-(1-Adamantyl)-1,2-diaminobenzene, previously unreported in the literature, has been prepared and a novel series of 5(6)-(1-adamantyl) benzimidazole derivatives synthesized. Nitration, hydrogenation, and side chain reactions have been carried out.

Acyl derivatives of 2-aminobenzimidazole and their fungicide activity

Pilyugin,Sapozhnikov,Sapozhnikova

, p. 738 - 743 (2007/10/03)

Procedures have been developed for the preparation of methyl 2-benzimidazolylcarbamate, 2-acetylaminobenzimidazole, 2- benzoylaminobenzimidazole, 2-(3,5-dibromo-2-hydroxybenzoylamino)benzimidazole, 1-(3,6-dichloro-2-methoxybenzoyl)-2-aminobenzimidazole, 2-(3,5-dichloro-2- hydroxybenzoylamino)benzimidazole, 2-(3,5-dichloro-2-methoxybenzoylamino) benzimidazole, and 1-(3,5,6-trichloro-2-methoxybenzoyl)-2-aminobenzimidazole. The synthesized compounds have been tested for fungicide activity.

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