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74305-50-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74305-50-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,0 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74305-50:
(7*7)+(6*4)+(5*3)+(4*0)+(3*5)+(2*5)+(1*0)=113
113 % 10 = 3
So 74305-50-3 is a valid CAS Registry Number.

74305-50-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name	20-nitro-N-(2,4,6-trinitrophenyl)-2,5,8,11,14,17-hexaoxabicyclo[16.4.0]docosa-1(18),19,21-trien-21-amine

1.2 Other means of identification

Product number	-
Other names	4 inverted exclamation marka-Nitro-5 inverted exclamation marka-(picrylamino)benzo-18-crown-6

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:74305-50-3 SDS

74305-50-3Upstream product

74305-50-3Downstream Products

74305-50-3Relevant articles and documents

SYNTHESIS OF CROWN ETHER DYES.

Yamashita,Nakamura,Takagi,ueno

, p. 1550 - 1554 (2007/10/02)

Crown ether dyes were synthesized in order to develop photometric reagents which are highly selective to alkali and alkaline earth metals. They contain dissociable protons attached to the chromophores of crown ether molecule. Their extraction behavior for alkali and alkaline earth metal ions as neutral complex was examined. The dyes extract potassium and alkalin earth metals, respectively. Dyes with picrylamino chromosphore are effective for extractive photometric determination of potassium. A molecular design of colorimetric reagents is discussed on the basis of crown ethers.

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CAS

74305-50-3