1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride

3-氨基-2-亚硝基-5,6,7,8-四氢-1H-吡唑并[1,2-a]哒嗪-1-酮盐酸盐

Also known as: 3-Amino-2-nitroso-5,6,7,8-tetrahydro-1H-pyrazolo[1,2-a]pyridazin-1-one hydrochloride, 1-Amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride

1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride (CAS 857035-98-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H11ClN4O2 and a molecular weight of 218.64100 g/mol. It is also known as 3-Amino-2-nitroso-5,6,7,8-tetrahydro-1H-pyrazolo[1,2-a]pyridazin-1-one hydrochloride and 1-Amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
857035-98-4
Jingsj CID
J-1132664-3
Molecular Formula
C7H11ClN4O2
Chinese Name
3-氨基-2-亚硝基-5,6,7,8-四氢-1H-吡唑并[1,2-a]哒嗪-1-酮盐酸盐
Molecular Weight
218.64100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Frequently Asked Questions

What is the CAS number of 1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride?

The CAS number of 1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride is 857035-98-4.

What are the molecular formula and molecular weight of 1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride?

1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride has molecular formula C7H11ClN4O2 and molecular weight 218.64100 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1-amino-2-nitroso-5,6,7,8-tetrahydropyrazolo[1,2-a]pyridazin-3-one hydrochloride (CAS 857035-98-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1132664-3 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.