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149990-86-3

149990-86-3

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149990-86-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149990-86-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,9,9 and 0 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 149990-86:
(8*1)+(7*4)+(6*9)+(5*9)+(4*9)+(3*0)+(2*8)+(1*6)=193
193 % 10 = 3
So 149990-86-3 is a valid CAS Registry Number.
InChI:InChI=1/C21H19N2O2P/c22-23-21(25)20(24)16-26(17-10-4-1-5-11-17,18-12-6-2-7-13-18)19-14-8-3-9-15-19/h1-16H,22H2,(H,23,25)

149990-86-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-oxo-3-(triphenyl-λ<sup>5</sup>-phosphanylidene)propanehydrazide

1.2 Other means of identification

Product number -
Other names Hydrazide of triphenylphosphoranylidenepyruvic 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:149990-86-3 SDS

149990-86-3Relevant articles and documents

OXALYLMETHYLENEPHOSPHORANES. 1. REACTIONS OF ETHYL TRIPHENYLPHOSPHORANYLIDENEPYRUVATE AND TRIPHENYLPHOSPHORANYLIDENEPYRUVIC ACID HYDRAZIDE WITH 5-ARYL-2,3-FURANDIONES

Kozminykh, V. O.,Igidov, N. M.,Kozminykh, E. N.,Berezina, E. S.

, p. 191 - 198 (2007/10/02)

Ethyl triphenylphosphoranylidenepyruvate (1) readily reacts with 5-aryl-2,3-furandiones (2) to afford the deeply coloured resonance stabilized cyclic oxalyl ylides (3) being inactive towards aldehydes.Once a small amount of the competitive Wittig product - 2-ethoxalyl-5-phenyl-3(2H)-furanone (4a) besides the corresponding phosphorane (3a) has been obtained.However triphenylphosphoranylidenepyruvic acid hydrazide (8) when treated with 5-aryl-2,3-furandiones (2) gives only aroylpyruvoylhydrazides (10), which can be converted to 3-pyrazolcarboxylic acid hydrazides (13).A possible mechanism of the reaction of ylide (1) with 2,3-furandiones (2) is proposed. Key words: Ethyl triphenylphosphoranylidenepyruvate; triphenylphosphoranylidenepyruvic acid hydrazide; reactions with 5-aryl-2,3-furandiones; 1-triphenylphosphoranylidene-4-cyclopentene-2,3-diones; oxalyl ylides; reactivity towards carbonyl reagents.

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