5-Amino-1,2-dihydropyrazol-3-one

BGC Id:	952919082140
CAS No:	28491-52-3
Synonyms:	3-amino-3-pyrazolin-5-one ; 5-amino-1h-pyrazol-3(2h)-one ; 3h-pyrazol-3-one,5-amino-1,2-dihydro- ; 5-amino-1,2-dihydropyrazol-3-one ; 3-amino-1,2-dihydropyrazol-5-one ; 5-amino-3-hydroxy-1h-pyrazole
Molecular Formula:	C3H5N3O
Molecular Weight:	99.0913
EINECS:

Verified providers in 2025

The following 2 notable providers have been checked and can be recommended.

AK Scientific

Leap Chem

Molecular Formula: C3H5N3O Molecular Weight: 99.09

What other providers are available for CAS 28491-52-3?

The last intensive check and update was carried out on 2025/12/26.

Identify

Synonyms:

3-amino-3-pyrazolin-5-one ; 5-amino-1h-pyrazol-3(2h)-one ; 3h-pyrazol-3-one,5-amino-1,2-dihydro- ; 5-amino-1,2-dihydropyrazol-3-one ; 3-amino-1,2-dihydropyrazol-5-one ; 5-amino-3-hydroxy-1h-pyrazole

CAS:

28491-52-3

EINECS:

Molecular Formula:

C3H5N3O

MDL:

MFCD00204482

Properties

Molecular Weight:

99.0913 g·mol−1

Density:

1.301

Melting point:

204°C

Suppliers

AK Scientific, Inc.

Company type: Supplier

AK Scientific provides fine chemicals and advanced intermediates to our customers worldwide. Currently, we have over 16.000 in stock, ready to ship products, at our California warehouse and this number is increasing weekly. All these products are stocked in multiple, convenient, sizes to fit your specific needs. Purchases are shipped on the same day your order is placed (before 4PM, Pacific Time) to ensure on-time delivery. Additionally Serotonin hydrochloride is supplied by us. AK Scientific products can be searched by Name (or ...

Country: USA Phone: +1 (510) 429-8835 Telefax: +1 (510) 429-8836

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Leap Chem Co., Ltd

Company type: Bulk and laboratory supplier

Country: P.R.China
Phone: +852-30606658

LEAPChem, a specialized fine chemicals supplier for research, development and production. LEAPChem provides nearly 50,000 rare and innovative chemical products to support the evolving needs of our customers in research & bulk manufacturing activities. As a highly customer-oriented enterprise, we are committed to providing high-quality customer services and products to our global customers in a cost-effective and efficient manner. Our client list includes many major pharmac ...

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What other providers are available for CAS 28491-52-3?

In addition to the providers presented here for 5-Amino-1,2-dihydropyrazol-3-one with the CAS number 28491-52-3, there are other 13 providers with slightly different product names available for this CAS number.

5-Amino-1H-pyrazol-3-ol

Dayang Chem (Hangzhou) Co.,Ltd. | Leap Chem Co., Ltd | BIOZOL Diagnostica Vertrieb GmbH +6 additional providers that we know from the past

5-Amino-1H-pyrazol-3(2H)-one

Capot Chemical Co., Ltd. | BLD Pharmatech Ltd | BuGuCh & Partners +1 additional providers that we know from the past