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66644-82-4

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66644-82-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66644-82-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,4 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 66644-82:
(7*6)+(6*6)+(5*6)+(4*4)+(3*4)+(2*8)+(1*2)=154
154 % 10 = 4
So 66644-82-4 is a valid CAS Registry Number.
InChI:InChI=1/C10H13NO6S/c1-15-8-5-6(18(11,13)14)4-7(9(8)16-2)10(12)17-3/h4-5H,1-3H3,(H2,11,13,14)

66644-82-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name methyl 2,3-dimethoxy-5-sulfamoylbenzoate

1.2 Other means of identification

Product number -
Other names EINECS 266-436-0

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:66644-82-4 SDS

66644-82-4Downstream Products

66644-82-4Relevant articles and documents

Novel preparation method of 2,3-dimethoxy-5-sulfonamide benzoic acid

-

, (2020/05/01)

The invention discloses a novel preparation method of 2,3-dimethoxy-5-sulfonamide benzoic acid, which relates to a preparation method of a medical intermediate. The method sequentially comprises the following steps: taking 3, 4-dihydroxybenzenesulfonamide as a raw material; performing bromination and substitution reactions in sequence; and finally, carrying out hydrolysis twice to obtain the product 2,3-dimethoxy-5-sulfonamide benzoic acid. The invention provides a brand-new synthetic route, the used raw materials are wide and sufficient in source, low in price, mild in reaction condition andsimple in process, the reaction of each step is conventionally operated, the use of highly toxic dimethyl sulfate and other harmful raw materials is avoided, the pollution is reduced, and the method has a relatively good application range.

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