Identification	Physical Data	Spectra
Route of Synthesis (ROS)	Safety and Hazards	Other Data

---

Identification

Product Name	1,5-Dimethyl-4-(methylamino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one hydrochloride
IUPAC Name	1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one;hydrochloride
Molecular Structure
CAS Registry Number	856307-27-2
NACRES	NA.24
MDL Number	MFCD16620361
Synonyms	1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one;hydrochloride 1,5-dimethyl-4-(methylamino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one hydrochloride; noramidopyrine hydrochloride; 4-Methylaminophenazone Hydrochloride; MFCD16620361; AKOS015894643; T4070; I05-1704; 4-Methylaminoantipyrine hydrochloride, analytical standard; 1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one;hydrochloride; 4-Methylamino-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one Hydrochloride (4-Methylaminophenazone Hydrochloride); 1,5-dimethyl-4-(methylamino)-2-phenyl-pyrazol-3-one;hydrochloride; 1,5-dimethyl-4-(methylamino)-2-phenyl-3-pyrazolone;hydrochloride; 1,5-dimethyl-4-(methylamino)-2-phenyl-3-pyrazolin-3-one;hydrochloride
Molecular Formula	C12H16ClN3O
Molecular Weight	253.73
InChI	InChI=1S/C12H15N3O.ClH/c1-9-11(13-2)12(16)15(14(9)3)10-7-5-4-6-8-10;/h4-8,13H,1-3H3;1H
InChI Key	NNONRTWOIVTAHL-UHFFFAOYSA-N
Canonical SMILES	CC1=C(C(=O)N(N1C)C2=CC=CC=C2)NC.Cl

Patent Information
No data available

---

Physical Data

Appearance	Off-white solid
Melting Point	194 °C

---

Spectra

MetaMizole IMpurity C (4-MethylaMinoantipyrine) HCl CAS#: 856307-27-2 HNMR
MetaMizole IMpurity C (4-MethylaMinoantipyrine) HCl CAS#: 856307-27-2 IR
MetaMizole IMpurity C (4-MethylaMinoantipyrine) HCl CAS#: 856307-27-2 MS

---

Route of Synthesis (ROS)

No data available

---

Safety and Hazards

GHS Hazard Statements

Not Classified

For more detailed information, please visit ECHA C&L website

Source: European Chemicals Agency (ECHA) License Note: Use of the information, documents and data from the ECHA website is subject to the terms and conditions of this Legal Notice, and subject to other binding limitations provided for under applicable law, the information, documents and data made available on the ECHA website may be reproduced, distributed and/or used, totally or in part, for non-commercial purposes provided that ECHA is acknowledged as the source: “Source: European Chemicals Agency, http://echa.europa.eu/”. Such acknowledgement must be included in each copy of the material. ECHA permits and encourages organisations and individuals to create links to the ECHA website under the following cumulative conditions: Links can only be made to webpages that provide a link to the Legal Notice page. License URL: https://echa.europa.eu/web/guest/legal-notice Description: The information provided here is aggregated from the “Notified classification and labelling” from ECHA’s C&L Inventory. Read more: https://echa.europa.eu/information-on-chemicals/cl-inventory-database

---

Other Data

Transportation	Not dangerous goods
	Under the room temperature and away from light
HS Code	294200
Storage	2 to 8 °C, dark very hygroscopic
Shelf Life	No data available
Market Price	No data available

Use Pattern

1,5-Dimethyl-4-(methylamino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one hydrochloride CAS#: 856307-27-2 is an MetaMizole IMpurity C (4-MethylaMinoantipyrine) HCl

Buy Reagent
No reagent supplier?	Send quick inquiry to ChemWhat
Want to be listed here as a reagent supplier? (Paid service)	Click here to contact ChemWhat

Approved Manufacturers
Want to be listed as an approved manufacturer (Requires approvement)?	Please download and fill out this form and send back to approved-manufacturers@chemwhat.com

Contact Us for Other Help
Contact us for other information or services	Click here to contact ChemWhat