Welcome to LookChem.com Sign In|Join Free

CAS

  • or

728-15-4

Post Buying Request

728-15-4 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

728-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 728-15-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 8 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 728-15:
(5*7)+(4*2)+(3*8)+(2*1)+(1*5)=74
74 % 10 = 4
So 728-15-4 is a valid CAS Registry Number.

728-15-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-(diphenylhydrazinylidene)acetic acid

1.2 Other means of identification

Product number -
Other names (diphenylhydrazono)acetic acid

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:728-15-4 SDS

728-15-4Relevant articles and documents

Preparation of α-(2,2-diphenylhydrazino)lactones and related compounds by radical cyclization: Use of glyoxylic acid hydrazone derivatives

Clive,Zhang,Subedi,Bouetard,Hiebert,Ewanuk

, p. 1233 - 1241 (2007/10/03)

Glyoxylic acid diphenylhydrazone (2a) and the corresponding O-benzyloxime (2b) are easily esterified in high yield by β-bromo alcohols. The resulting esters undergo radical cyclization to α-(2,2-diphenylhydrazino)- or α-[(phenylmethoxy)amino]lactones on treatment with tributyltin hydride. Esters for radical cyclization were also made using a β-(phenylseleno) alcohol and an enol ether. Several derivatives of glyoxylic acid were evaluated, but none was as effective as 2a or 2b. The imine 28 was prepared by an indirect route; it undergoes radical cyclization with displacement of the nitrogen substituent (28 → 30) so that an α-amino lactone can be generated by acid hydrolysis of the cyclization product.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 728-15-4