Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Pyrimido[5,4-d]pyrimidine (7CI,8CI,9CI)
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
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254-82-0

254-82-0 structure

254-82-0 structure

Name: Pyrimido[5,4-d]pyrimidine (7CI,8CI,9CI)
Chemical Name: pyrimido[5,4-d]pyrimidine
CAS Number: 254-82-0
Molecular Formula: C₆H₄N₄
Molecular Weight: 132.12300
Create Date: 2018-11-28 18:35:50
Modify Date: 2025-09-18 17:13:14

Name	pyrimido[5,4-d]pyrimidine
Synonyms	1,3,5,7-Tetraazanaphthalene Homopurine Pyrimidopyrimidin

Molecular Formula	C₆H₄N₄
Molecular Weight	132.12300
Exact Mass	132.04400
PSA	51.56000
LogP	0.41980

HS Code	2933990090

591-55-9 structure

591-55-9

77287-34-4 structure

77287-34-4

~85%

254-82-0 structure

254-82-0

Literature: Wong, Fung Fuh; Huang, Yu-Ying; Chang, Chun-Hsi Journal of Organic Chemistry, 2012 , vol. 77, # 19 p. 8492 - 8500

Precursor 2
591-55-9 77287-34-4
DownStream 0

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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