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Thymine

Thymine structure

CAS No:
65-71-4
Formula:
C5H6N2O2
Chemical Name:
Thymine
Synonyms:
2,4(1H,3H)-Pyrimidinedione,5-methyl-;Thymine;5-Methyl-2,4(1H,3H)-pyrimidinedione;2,4-Dihydroxy-5-methylpyrimidine;5-Methyluracil;5-Methyl-2,4-dihydroxypyrimidine;5-Methylpyrimidine-2,4-dione;5-Methyl-1,2,3,4-tetrahydropyrimidine-2,4-dione;NSC 14705;NSC 168663;4-Hydroxy-5-methylpyrimidin-2(1H)-one;2-Hydroxy-5-methyl-3,4-dihydropyrimidin-4-one;2-Hydroxy-5-methyl-1,4-dihydropyrimidin-4-one;3059-73-2;691841-57-3
Categories:
Cosmetic Ingredient > Skin Conditioning

Description

Thymine is one of the four nucleobases in the nucleic acid of DNA and can be a target for actions of 5-fluorouracil (5-FU) in cancer treatment, with a Km of 2.3 μM.

Solid

Thymine is a pyrimidine nucleobase that is uracil in which the hydrogen at position 5 is replaced by a methyl group. It has a role as a human metabolite, an Escherichia coli metabolite and a mouse metabolite. It is a pyrimidine nucleobase and a pyrimidone.|One of four constituent bases of DNA.

Thymine Basic Attributes

Molecular Weight：

126.11

Exact Mass：

126.11

BRN：

607626

EC Number：

200-616-1

UNII：

QR26YLT7LT

NSC Number：

14705

DSSTox ID：

DTXSID4052342

HScode：

2933599090

Characteristics

PSA：

58.2

XLogP3：

-0.6

Appearance：

White Powder

Density：

1.4±0.1 g/cm3

Melting Point：

316 °C

Flash Point：

198.0±26.5 °C

Refractive Index：

1.614

Water Solubility：

soluble in hot water. Slightly soluble in alcohol.

Storage Conditions：

Store at RT.

Collision Cross Section：

121.9 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]|117.39 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]|126.14 Å² [M+H]+ [CCS Type: DT, Method: stepped-field]|122.42 Å² [M-H]- [CCS Type: DT, Method: stepped-field]|115 Å² [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|122.1 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|119 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|119.5 Å² [M-H]-

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36-36/37/38

safety instructions：

22-24/25-37/39-26

RTECS Number：

XP2100000

Marks：

Stability/Shelf Life：

Stable. Incompatible with strong oxidizing agents.

Precautionary statement(s)：

P264, P280, P305+P351+P338, P33, P313

Hazard Statements：

H319

GHS Classification：

|Warning|H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]|P264, P280, P305+P351+P338, and P337+P313|Aggregated GHS information provided by 6 companies from 2 notifications to the ECHA C&L Inventory.

Drug Information

MeSH Entry Terms：

5 Methyluracil

Thymine Use and Manufacturing

Uses

A nucleobase found in deoxyribonucleic acids (DNA).

Manufacturing Info：

2,4(1H,3H)-Pyrimidinedione, 5-methyl-: ACTIVE

Computed Properties

Molecular Weight:126.11
XLogP3:-0.6
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:2
Exact Mass:126.042927438
Monoisotopic Mass:126.042927438
Topological Polar Surface Area:58.2
Heavy Atom Count:9
Complexity:195
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Related Drugs

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Specifications	Each tablet contains 150 mg of lamivudine and 300 mg of zidovudine

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Indication	Based on the results of in vitro studies of abacavir and its major metabolic pathway, the possibility of P450-mediated interactions with other drugs is very small. The cytochrome P450 enzyme system does not play an important role in the metabolism of abacavir, and abacavir does not inhibit CYP3A4-mediated metabolism. In in vitro studies, clinically significant concentrations of abacavir did not inhibit the activity of CYP3A4, CYP2C9 or CYP2D6 enzymes. Therefore, the possibility of interactions between abacavir and antiretroviral protease inhibitors or other drugs that are primarily metabolized by P450 is extremely small. Potent enzyme inducers such as rifampicin, phenobarbital, and phenytoin can slightly reduce the plasma concentration of abacavir through their effects on UDP-glucuronyltransferase. When used with ethanol
Specifications	Each tablet contains 300 mg of abacavir sulfate (calculated as abacavir), 150 mg of lamivudine and 300 mg of zidovudine.

Abacavir and diavudine tablets

Indication

Based on the results of in vitro studies of abacavir and its major metabolic pathway, the possibility of P450-mediated interactions with other drugs is very small. The cytochrome P450 enzyme system does not play an important role in the metabolism of abacavir, and abacavir does not inhibit CYP3A4-mediated metabolism. In in vitro studies, clinically significant concentrations of abacavir did not inhibit the activity of CYP3A4, CYP2C9 or CYP2D6 enzymes. Therefore, the possibility of interactions between abacavir and antiretroviral protease inhibitors or other drugs that are primarily metabolized by P450 is extremely small. Potent enzyme inducers such as rifampicin, phenobarbital, and phenytoin can slightly reduce the plasma concentration of abacavir through their effects on UDP-glucuronyltransferase. When used with ethanol

Specifications

Each tablet contains 300 mg of abacavir sulfate (calculated as abacavir), 150 mg of lamivudine and 300 mg of zidovudine.

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Guide of Thymine

Description
Basic Attributes
Characteristics
Safety Information
Drug Information
Use and Manufacturing
Computed Properties
Related Drugs
Recommended Suppliers
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