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Chemical Name CAS Number Signal Word
4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-3-carboxylic acid dihydrochloride (EC: 983-562-8) 2137568-32-0 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-4-carboxylic acid dihydrochloride (EC: 951-417-8) 2408959-09-9 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine dihydrochloride (EC: 821-574-6) 165894-07-5 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-2-amine (EC: 817-443-8) 149978-63-2 Warning
{4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-2-yl}methanamine dihydrochloride (EC: 840-912-3) 1909336-24-8 Warning
{4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-2-yl}methanol (EC: 855-711-6) 623564-49-8 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-3-amine hydrochloride (EC: 822-924-0) 2059988-79-1 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-3-ol hydrochloride (EC: 951-794-9) 2411269-16-2 Warning
{4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-3-yl}methanamine dihydrochloride (EC: 844-191-6) 2137914-62-4 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-4-amine (EC: 865-870-3) 1547114-20-4 Danger
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-4-one (EC: 828-968-7) 197094-19-2 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-5-amine dihydrochloride (EC: 845-520-6) 2034157-32-7 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridin-5-ol (EC: 823-666-1) 866216-18-4 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-2-carboxylic acid (EC: 837-841-5) 307313-03-7 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-3-carboxylic acid (EC: 820-460-3) 307307-97-7 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-3-sulfonamide (EC: 862-782-7) 2150944-43-5 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-4-carboxylic acid (EC: 852-535-1) 1553175-83-9 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-5-carboxylic acid (EC: 841-266-5) 1504461-56-6 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-6-carboxylic acid (EC: 836-274-0) 1554586-33-2 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-7-carboxylic acid (EC: 852-501-6) 1556315-73-1 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyridine (EC: 872-703-8) 19078-57-0 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidin-5-one (EC: 854-104-3) 29303-21-7 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine-3-carbaldehyde (EC: 891-698-3) 474957-13-6 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (EC: 882-392-0) 1016703-62-0 Warning
4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine (EC: 823-035-0) 126352-69-0 Warning
4H,5H,6H,7H-pyrazolo[1,5-b]pyridazine-3-carboxylic acid (EC: 856-803-9) 1379204-00-8 Warning
4H,5H,6H,7H-pyrazolo[1,5-b]pyridazine (EC: 984-404-0) 2383967-91-5 Danger
4H,5H,6H,7H-thieno[2,3-c]pyridine-2-carboxylic acid hydrochloride (EC: 959-095-0) 2173999-54-5 Warning
4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylic acid hydrochloride (EC: 828-668-6) 1052520-71-4 Warning
4H,5H,6H,7H-thieno[2,3-c]pyridine-7-carboxylic acid hydrochloride (EC: 995-390-0) 2059932-32-8 Warning
4H,5H,6H,7H-thieno[2,3-c]pyridine (EC: 832-330-3) 62019-71-0 Danger
{4H,5H,6H,7H-thieno[3,2-c]pyridin-4-yl}methanol (EC: 175-261-8) 1428233-87-7 Danger
4H,5H,6H,7H-thieno[3,2-c]pyridin-7-one hydrochloride (EC: 180-716-9) 2995289-58-0 Warning
4H,5H,6H,7H-thieno[3,2-c]pyridine-2-carboxylic acid hydrochloride (EC: 153-886-7) 116118-99-1 Warning
4H,5H,6H,7H-thieno[3,2-c]pyridine-2-sulfonamide hydrochloride (EC: 116-661-4) 1989671-89-7 Warning
4H,5H,6H,7H-thieno[3,2-c]pyridine-4-carboxylic acid hydrochloride (EC: 980-294-3) 1251924-21-6 Warning
4H,5H,6H,7H-thieno[3,2-c]pyridine-5-carbonyl chloride (EC: 991-570-8) 934703-86-3 Danger
4H,5H,6H,7H-thieno[3,2-c]pyridine-5-carboxamide (EC: 101-649-3) 953886-27-6 Warning
4H,5H,6H,7H-thieno[3,2-c]pyridine-5-sulfonyl fluoride (EC: 969-452-2) 2470440-52-7 Danger
4H,5H,6H-7lambda5-pyrrolo[1,2-c][1,2,3]oxadiazol-7-ylium-3-olate (EC: 977-280-4) 86477-05-6 Warning
{4H,5H,6H-cyclopenta[b]thiophen-2-yl}methanamine hydrochloride (EC: 851-111-3) 2305252-25-7 Warning
4H,5H,6H-cyclopenta[b]thiophen-4-one (EC: 823-209-6) 5650-51-1 Warning
4H,5H,6H-cyclopenta[b]thiophen-5-one (EC: 984-646-7) 33449-51-3 Warning
4H,5H,6H-cyclopenta[b]thiophen-6-one (EC: 823-210-1) 5650-52-2 Warning
4H,5H,6H-cyclopenta[b]thiophene-2-carbaldehyde (EC: 898-106-2) 956010-59-6 Warning
4H,5H,6H-cyclopenta[b]thiophene-2-carboxylic acid (EC: 818-920-3) 40133-06-0 Warning
4H,5H,6H-cyclopenta[c][1,2]oxazol-3-amine (EC: 864-837-0) 698975-77-8 Warning
4H,5H,6H-cyclopenta[c]furan-1-carboxylic acid (EC: 820-503-6) 1596746-91-6 Warning
4H,5H,6H-cyclopenta[c]thiophene-5-carboxylic acid (EC: 888-644-6) 160502-05-6 Warning
4H,5H,6H-cyclopenta[d][1,2,3]thiadiazole-4-carboxylic acid (EC: 969-751-8) 1556498-23-7 Warning