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803732-70-9

803732-70-9

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803732-70-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 803732-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,3,7,3 and 2 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 803732-70:
(8*8)+(7*0)+(6*3)+(5*7)+(4*3)+(3*2)+(2*7)+(1*0)=149
149 % 10 = 9
So 803732-70-9 is a valid CAS Registry Number.

803732-70-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name ethyl 4-(2-fluorophenyl)-4-hydroxybut-2-ynoate

1.2 Other means of identification

Product number -
Other names 2-Butynoic acid,4-(2-fluorophenyl)-4-hydroxy-,ethyl ester

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:803732-70-9 SDS

803732-70-9Relevant articles and documents

Metal-free annulative hydrosulfonation of propiolate esters: synthesis of 4-sulfonates of coumarins and butenolides

Fernandes, Rodney A.,Gangani, Ashvin J.,Kunkalkar, Rupesh A.

, p. 3970 - 3984 (2020)

An efficient metal-free and cost-effective method for the synthesis of coumarin and butenolide 4-sulfonates (46 examples) has been developed. The reaction involves addition of sulfonic acids to ethyl propiolates followed by lactonization, resulting in direct formation of coumarin and butenolide 4-sulfonates. This methodology has been elaborated to Sonogashira and Suzuki coupling including the synthesis of rac-tolterodine.

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