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2,4,5,6-?????????? ???

2,4,5,6-?????????? ???
2,4,5,6-?????????? ??? ??? ???
?? ??:
5392-28-9
???:
2,4,5,6-?????????? ???
???(??):
2,4,5,6-?????????????;??????????????;2,4,5,6-?????????? ????
???:
Pyrimidinetetramine sulfate
???(??):
2,4,5,6-Tetraaminopyrimidine sulfate;5329-28-9;2,4,5,6-TETRAAMINIOPYRIMIDINE SULFATE;TETRAAMINOPYRIMIDINE SULFATE;2,4,5,6-Tetramino Pyridine Sulfate;2,4,5,6-PyriMidinetetraMine Sulfate;PyriMidine-2,4,5,6-tetraaMine sulfate;NSC 3277;NSC 227862;Hc Red 16
CBNumber:
CB8170253
???:
C4H10N6O4S
??? ??:
238.22
MOL ??:
5392-28-9.mol
MSDS ??:
SDS

2,4,5,6-?????????? ??? ??

???
>300 °C(lit.)
?? ??
Sealed in dry,Room Temperature
???
DMSO(?? ???, ??), ?(?? ??, ??)
??? ??
??? ??
??
????? ????
???
?? ???
BRN
3785189
??? ?? ??
HAIR DYEING
InChI
InChI=1S/C4H8N6.H2O4S/c5-1-2(6)9-4(8)10-3(1)7;1-5(2,3)4/h5H2,(H6,6,7,8,9,10);(H2,1,2,3,4)
InChIKey
MQEFDQWUCTUJCP-UHFFFAOYSA-N
SMILES
NC1=C(N=C(N)N=C1N)N.S(O)(O)(=O)=O
CAS ??????
5392-28-9(CAS DataBase Reference)
EPA
Pyrimidinetetramine, sulfate (1:1) (5392-28-9)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? Xi
?? ???? ?? 36/37/38
????? 22-24/25-37/39-26-36
WGK ?? 3
RTECS ?? UV9738000
TSCA TSCA listed
HS ?? 29335990
???? ??? 11 - Combustible Solids
???? ?? 2001-3-1760
????(GHS): Exclamation Mark (GHS07)
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? P264, P280, P302+P352, P321,P332+P313, P362
H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? P264, P280, P305+P351+P338,P337+P313P
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ??
??????:
P261 ??·?·??·???·??·...·????? ??? ????.
P264 ?? ??? ?? ??? ????.
P264 ?? ??? ?? ??? ????.
P280 ????/???/???/?????? ?????.
P304+P340 ???? ??? ??? ?? ??? ??? ???? ?? ??? ??? ????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
P405 ???? ?????.
NFPA 704
1
2 0

2,4,5,6-?????????? ??? MSDS


2,4,5,6-Tetraaminopyrimidine sulfate

2,4,5,6-?????????? ??? C??? ??, ??, ??

??? ??

Light yellow crystal powder

??

2,4,5,6-Tetraaminopyrimidine Sulfate is an intermediate for the synthesis of the antitumor drugs methotrexate and fludarabine.

Synthesis

Pyrimidinetetramine sulfate is synthesized from malononitrile and guanidine nitrate through a three-step reaction involving cyclization, nitrosation, and reduction. This process uses zinc powder instead of the expensive reducing agent Raney nickel, resulting in lower costs, simpler operation, and greater safety and environmental friendliness.

Purification Methods

Purify the salt by recrystallisation from H2O, 2N H2SO4 (20 parts, 67% recovery) or 0.1N H2SO4 (40 parts, 62% recovery), and dried in air. [UV: Konrad & Pfleiderer Chem Ber 103 722 1970, Malletta et al. J Am Chem Soc 69 1814 1947, Cavalieri et al. J Am Chem Soc 70 3875 1948, Beilstein 25 H 423, 25 III/IV 3106.]

2,4,5,6-?????????? ??? ?? ?? ? ???

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