2(1H)-Pyrimidinone,4-amino-1-methyl

Modify Date: 2025-08-20 19:40:02

2(1H)-Pyrimidinone,4-amino-1-methyl Structure
2(1H)-Pyrimidinone,4-amino-1-methyl structure
 Common Name 2(1H)-Pyrimidinone,4-amino-1-methyl
CAS Number 1122-47-0 Molecular Weight 125.12900
Density 1.34g/cm3 Boiling Point 241.6ºC at 760mmHg
Molecular Formula C5H7N3O Melting Point N/A
MSDS N/A Flash Point 99.9ºC

 Use of 2(1H)-Pyrimidinone,4-amino-1-methyl


1-Methylcytosine is a methylated form of the DNA base cytosine and used as a nucleobase of hachimoji DNA, in which it pairs with Isoguanine[1][2].

 Names

Name 1-methylcytosine
Synonym More Synonyms

 2(1H)-Pyrimidinone,4-amino-1-methyl Biological Activity

Description 1-Methylcytosine is a methylated form of the DNA base cytosine and used as a nucleobase of hachimoji DNA, in which it pairs with Isoguanine[1][2].
Related Catalog
References

[1]. Kistenmacher, T. J.; Rossi, M. (1977-12-15). "1-Methylcytosine: a refinement". Acta Crystallographica (1977) Section B. 33 (12): 3962–3965.

[2]. Hoshika S, et al. Hachimoji DNA and RNA: A genetic system with eight building blocks. Science. 2019 Feb 22;363(6429):884-887.

 Chemical & Physical Properties

Density 1.34g/cm3
Boiling Point 241.6ºC at 760mmHg
Molecular Formula C5H7N3O
Molecular Weight 125.12900
Flash Point 99.9ºC
Exact Mass 125.05900
PSA 61.90000
Vapour Pressure 0.0356mmHg at 25°C
Index of Refraction 1.619
InChIKey HWPZZUQOWRWFDB-UHFFFAOYSA-N
SMILES Cn1ccc(N)nc1=O
Storage condition 2-8°C

 Safety Information

Hazard Codes Xi
HS Code 2933599090

 Precursor & DownStream

Precursor  0

DownStream  2

 Customs

HS Code 2933599090
Summary 2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

1-methyl-4-aminopyrimidin-2-(1H)-one
4-amino-1-methyl-1H-pyrimidin-2-one
4-amino-1-methylpyrimidin-2(1H)-one
1MC
methyl-cytosine
1bky
2(1H)-Pyrimidinone,4-amino-1-methyl
1-methyl cytosin
4-amino-1-methylpyrimidin-2-one
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