Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 7-Hydroxy-5-methyl-1,3,4-triazaindolizine
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 7-Hydroxy-5-methyl-1,3,4-triazaindolizine
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

2503-56-2

2503-56-2 structure

Name: 7-Hydroxy-5-methyl-1,3,4-triazaindolizine
Chemical Name: 7-Hydroxy-5-methyl-1,3,4-triazaindolizine
CAS Number: 2503-56-2
Molecular Formula: C₆H₆N₄O
Molecular Weight: 150.13800
Catalog: analytical chemistry Standard Pharmacopoeia Standards and Magazine Standards
Create Date: 2018-10-09 18:13:36
Modify Date: 2025-08-25 20:55:14

Name	7-Hydroxy-5-methyl-1,3,4-triazaindolizine
Synonyms	Trapidil interMediate product 7-Hydroxy-5-methyl-1 6-Methyl-4-hydroxy-1,3,3a,7-tetraazaindene 5-Methyl[1,2,4]triazolo[1,5-a]pyrimidin-7-ol EINECS 219-706-7 5-Hydroxy-7-methyl-1,3,8-triazaindolizin 5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-ol 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine 5-Methyl-1,3,4-triazaindolizine-7-ol Triazaindolizine 7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidine 5-METHYL-(1,2,4)TRIAZOLO(1,5-A)PYRIMIDIN-7-OL 5-methyl-1,2,4-triazolo[1,5-a]pyrimidine-7(4H)-one 5-methyl-[1,2,4]-triazolo-[1,5-a]-pyrimidin-7-ol Methyl hydroxytriazaindolizine 4-Hydroxy-6-methyl-1,3,3a,7-tetraazaindene 5-Methyl-s-trazolo[1,5-]pyrimidin-7-ol 4-hydroxy-6-methyl-1,3,3a,7-tetraza-indene 5-Methyl-1,2,4-Triazolo[1,5-a]Pyrimidin-7-ol MFCD00005555

Density	1.424g/cm3
Melting Point	280-283 °C(lit.)
Molecular Formula	C₆H₆N₄O
Molecular Weight	150.13800
Exact Mass	150.05400
PSA	63.31000
LogP	0.13830
Index of Refraction	1.699
Water Solubility	INSOLUBLE IN COLD WATER

CHEMICAL IDENTIFICATION

RTECS NUMBER :: XZ6133300

CHEMICAL NAME :: (1,2,4)Triazolo(1,5-a)pyrimidin-7-ol, 5-methyl-

CAS REGISTRY NUMBER :: 2503-56-2

LAST UPDATED :: 199706

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C6-H6-N4-O

MOLECULAR WEIGHT :: 150.16

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 :: >450 mg/kg

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

REFERENCE :: OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 13,597,1977

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H315-H319-H335
Precautionary Statements	P305 + P351 + P338
Hazard Codes	Xi:Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S36
RIDADR	NONH for all modes of transport
WGK Germany	1
RTECS	XZ6133300
HS Code	2933990090

141-97-9

61-82-5

~46%

2503-56-2

Literature: BIOCRYST PHARMACEUTICALS, INC.; BABU, Yarlagadda, S.; CHAND, Pooran; KOTIAN, Pravin, L.; KUMAR, V., Satish Patent: WO2010/14930 A2, 2010 ; Location in patent: Page/Page column 51-52 ; WO 2010/014930 A2

61-82-5

141-97-9

~55%

2503-56-2

Literature: Gujjar, Ramesh; Marwaha, Alka; Mazouni, Farah El; White, John; White, Karen L.; Creason, Sharon; Shackleford, David M.; Baldwin, Jeffrey; Charman, William N.; Buckner, Frederick S.; Charman, Susan; Rathod, Pradipsinh K.; Phillips, Margaret A. Journal of Medicinal Chemistry, 2009 , vol. 52, # 7 p. 1864 - 1872

Precursor 2
141-97-9 61-82-5
DownStream 1
24415-66-5

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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