Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 3-Amino-4-pyrazolecarboxylic acid
Price: Check
Purity: 95.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 3-Amino-4-pyrazolecarboxylic acid
Price: ￥478.0/1g ￥1788.0/5g
Purity: 98.0%
Stocking Period: 2 Day
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3-Amino-1H-pyrazole-4-carboxylic acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

41680-34-6

41680-34-6 structure

41680-34-6 structure

Name: 3-Amino-4-pyrazolecarboxylic acid
Chemical Name: 3-Amino-1H-pyrazole-4-carboxylic acid
CAS Number: 41680-34-6
Molecular Formula: C₄H₅N₃O₂
Molecular Weight: 127.101
Create Date: 2018-03-15 08:00:00
Modify Date: 2025-08-26 11:57:11

Name	3-Amino-1H-pyrazole-4-carboxylic acid
Synonyms	3-Amino-1H-pyrazole-4-carboxylic acid 1H-Pyrazole-4-carboxylic acid, 3-amino- 3-Amino-4-pyrazolecarboxylic acid EINECS 255-493-7 3-Aminopyrazole-4-carboxylic acid MFCD00005239

Density	1.7±0.1 g/cm3
Boiling Point	502.7±35.0 °C at 760 mmHg
Melting Point	135 °C (dec.)(lit.)
Molecular Formula	C₄H₅N₃O₂
Molecular Weight	127.101
Flash Point	257.8±25.9 °C
Exact Mass	127.038177
PSA	92.00000
LogP	0.40
Vapour Pressure	0.0±1.4 mmHg at 25°C
Index of Refraction	1.720
Storage condition	Refrigerator (+4°C)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UQ6390000

CHEMICAL NAME :: 4-Pyrazolecarboxylic acid, 3-amino-

CAS REGISTRY NUMBER :: 41680-34-6

LAST UPDATED :: 199206

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C4-H5-N3-O2

MOLECULAR WEIGHT :: 127.12

WISWESSER LINE NOTATION :: T5MNJ CZ DVQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 180 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#04843

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H315-H319-H335
Precautionary Statements	P261-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi: Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S37/39
RIDADR	NONH for all modes of transport
WGK Germany	3
RTECS	UQ6390000
HS Code	2933199090

6994-25-8 structure

6994-25-8

~%

41680-34-6 structure

41680-34-6

Literature: Schmidt; Druey Helvetica Chimica Acta, 1956 , vol. 39, p. 986,988

Precursor 1
6994-25-8
DownStream 6
912773-22-9 869941-96-8 29097-00-5 676247-93-1
1820-80-0 725693-84-5

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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