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Chemical Name CAS Number Signal Word
1-methyl-1H,2H,3H,4H-pyrido[3,4-b]pyrazine (EC: 856-255-0) 933688-17-6 Danger
1-methyl-1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine (EC: 819-580-9) 73627-18-6 Warning
1-methyl-1H,2H,3H-imidazo[4,5-b]pyrazin-2-one (EC: 839-952-4) 84996-45-2 Warning
1-methyl-1H,2H,3H-imidazo[4,5-c]pyridin-2-one (EC: 867-819-0) 40423-52-7 Warning
1-methyl-1H,2H,3H-pyrazolo[1,5-a]imidazole-7-carboxylic acid (EC: 875-579-3) 933731-32-9 Warning
1-methyl-1H,2H,3H-pyrazolo[3,4-b]pyridin-3-one (EC: 118-274-6) 2942-45-2 Warning
1-methyl-1H,2H,4H-pyrido[2,3-d][1,3]oxazine-2,4-dione (EC: 169-659-0) 53890-44-1 Warning
1-methyl-1H,4H,5H,6H,7H-[1,2,3]triazolo[4,5-c]pyridine (EC: 839-990-1) 160752-39-6 Danger
1-methyl-1H,4H,5H,6H,7H,8H-cyclohepta[c]pyrazol-4-one (EC: 961-771-5) 115309-88-1 Warning
1-methyl-1H,4H,5H,6H,7H,8H-cyclohepta[c]pyrazol-8-one (EC: 964-714-2) 1962144-26-8 Warning
1-methyl-1H,4H,5H,6H,7H,8H-pyrazolo[3,4-c]azepine dihydrochloride (EC: 844-696-1) 2287344-96-9 Warning
1-methyl-1H,4H,5H,6H,7H,8H-pyrazolo[4,3-c]azepine (EC: 834-228-4) 1505428-23-8 Warning
1-methyl-1H,4H,5H,6H,7H-imidazo[4,5-c]pyridine dihydrochloride (EC: 983-177-5) 485402-35-5 Warning
1-methyl-1H,4H,5H,6H,7H-imidazo[4,5-c]pyridine (EC: 819-985-0) 87673-88-9 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[3,4-b]pyridine (EC: 859-456-1) 188998-38-1 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[3,4-c]pyridin-3-ol (EC: 872-045-1) 71233-24-4 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[3,4-c]pyridine-3-carboxylic acid hydrochloride (EC: 836-737-7) 1706461-16-6 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[3,4-c]pyridine dihydrochloride (EC: 971-018-2) 1228878-69-0 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[3,4-c]pyridine (EC: 819-632-0) 1228994-66-8 Warning
{1-methyl-1H,4H,5H,6H,7H-pyrazolo[4,3-c]pyridin-3-yl}methanol dihydrochloride (EC: 895-965-5) 1269106-56-0 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[4,3-c]pyridine (EC: 890-101-3) 100501-58-4 Warning
1-methyl-1H,4H,5H,6H,7H-pyrazolo[4,3-d]pyrimidine-5,7-dione (EC: 868-492-7) 83824-38-8 Warning
1-methyl-1H,4H,5H,6H,7H-pyrrolo[2,3-c]pyridin-7-one (EC: 978-068-4) 1311315-25-9 Warning
1-methyl-1H,4H,5H,6H,7H-pyrrolo[2,3-c]pyridine hydrochloride (EC: 827-838-7) 1394040-48-2 Warning
1-methyl-1H,4H,5H,6H,7H-pyrrolo[3,2-c]pyridine-2-carbonitrile hydrochloride (EC: 895-885-0) 2445785-63-5 Warning
1-methyl-1H,4H,5H,6H,7H-pyrrolo[3,2-c]pyridine hydrochloride (EC: 874-271-6) 1956306-96-9 Warning
{1-methyl-1H,4H,5H,6H-cyclopenta[c]pyrazol-3-yl}methanamine (EC: 963-476-7) 1018584-69-4 Danger
1-methyl-1H,4H,5H,6H-cyclopenta[c]pyrazole-3-carbaldehyde (EC: 892-531-7) 1018584-73-0 Warning
1-methyl-1H,4H,5H,6H-cyclopenta[c]pyrazole-3-carboxylic acid (EC: 860-108-6) 854405-75-7 Warning
1-methyl-1H,4H,5H,6H-cyclopenta[d][1,2,3]triazol-4-one (EC: 184-695-7) 1552707-34-2 Warning
1-methyl-1H,4H,5H,6H-pyrrolo[3,4-c]pyrazol-3-amine dihydrochloride (EC: 853-978-3) 1909324-73-7 Warning
1-methyl-1H,4H,5H,6H-pyrrolo[3,4-c]pyrazole dihydrochloride (EC: 874-641-7) 424819-89-6 Warning
1-methyl-1H,4H,5H-pyrazolo[3,4-d]pyridazin-4-one (EC: 867-235-6) 40995-46-8 Warning
1-methyl-1H,4H,6H,7H-pyrano[3,4-d]imidazol-2-amine (EC: 817-666-0) 1849268-08-1 Warning
1-methyl-1H,4H,6H,7H-pyrano[3,4-d]imidazol-2-amine hydrochloride (EC: 946-824-2) 2172496-60-3 Warning
1-methyl-1H,4H,6H,7H-pyrano[3,4-d]imidazole (EC: 867-012-3) 2172599-51-6 Warning
1-methyl-1H,4H,6H,7H-pyrano[4,3-c]pyrazol-3-amine (EC: 897-285-4) 1547025-88-6 Warning
{1-methyl-1H,4H,6H,7H-pyrano[4,3-c]pyrazol-3-yl}methanamine hydrochloride (EC: 981-205-0) 2309465-60-7 Warning
{1-methyl-1H,4H,6H,7H-pyrano[4,3-c]pyrazol-3-yl}methanol (EC: 110-246-1) 2551115-01-4 Warning
1-methyl-1H,4H,6H,7H-pyrano[4,3-c]pyrazole-3-carbaldehyde (EC: 840-960-5) 1545674-59-6 Warning
1-methyl-1H,4H,6H,7H-pyrano[4,3-c]pyrazole-3-carboxylic acid (EC: 850-812-1) 1533231-78-5 Warning
1-methyl-1H,4H,6H,7H-thiopyrano[4,3-b]pyrrole-2-carboxylic acid (EC: 878-675-3) 1784316-97-7 Warning
1-methyl-1H,6H,7H,8H-cyclohepta[c]pyrazol-8-one (EC: 113-973-2) 1962144-34-8 Warning
1-methyl-1H,6H,7H-pyrazolo[4,3-d]pyrimidin-7-one (EC: 874-702-8) 314021-93-7 Warning
1-methyl-1H,6H,7H-pyrrolo[2,3-c]pyridin-7-one (EC: 868-102-5) 1311314-54-1 Warning
1-Methyl-1H-benzimidazol-3-ium Trifluoromethanesulfonate (EC: 878-801-7) 361447-89-4 Warning
1-Methyl-1H-benzimidazole-2-thiol (EC: 626-313-8) 2360-22-7 Warning
1-Methyl-1H-benzo[d]imidazol-2-amine (EC: 627-875-7) 1622-57-7 Warning
1-Methyl-1H-benzoimidazole-6-boronic acid (EC: 801-180-0) 1072945-87-9 Warning
1-methyl-1H-benzotriazole (EC: 236-401-4) 13351-73-0 Warning