Exact Mass: 444.3239

Exact Mass Matches: 444.3239

Found 500 metabolites which its exact mass value is equals to given mass value 444.3239, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

Fusaproliferin

Fusaproliferin; (-)-Fusaproliferin

C27H40O5 (444.2876)

Menatetrenone

2-methyl-3-[(2E,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraen-1-yl]-1,4-dihydronaphthalene-1,4-dione

C31H40O2 (444.3028)

Menatetrenone, also known as MK-4, is a vitamin K compound used as a hemostatic agent, and also as adjunctive therapy for the pain of osteoporosis. Menatetrenone is one of the nine forms of vitamin K2 and is a short-chain menaquinone. MK-4 is produced via conversion of vitamin K1 in the body, in the testes, pancreas and arterial walls (Wikipedia). Vitamin K2 is found in brassicas. Vitamin K2 is widely distributed in green leaves and vegetables. It is a fat-soluble dietary factor effective in controlling blood coagulation. All members of the vitamin K group of vitamins share a methylated naphthoquinone ring structure and vary in the aliphatic side chain attached at the 3-position. Phylloquinone (also known as vitamin K1) invariably contains in its side chain four isoprenoid residues, one of which is unsaturated. Human milk contains between 1 and 4 micrograms/litre of vitamin K1, while formula-derived milk can contain up to 100 micrograms/litre in supplemented formulas. Vitamin K2 concentrations in human milk appear to be much lower than those of vitamin K1. It is estimated that there is a 0.25 to 1.7 percent occurrence of vitamin K deficiency bleeding in the first week of the infants life with a prevalence of 2-10 cases per 100,000 births. The biochemistry of how vitamin K is used to convert glutamic acid (Glu) to gamma-carboxyglutamic acid (Gla) has been elucidated over the past thirty years in academic laboratories throughout the world. Within the cell, vitamin K undergoes electron reduction to a reduced form of vitamin K (called vitamin K hydroquinone) by the enzyme vitamin K epoxide reductase (or VKOR). Another enzyme then oxidizes vitamin K hydroquinone to allow carboxylation of Glu to Gla; this enzyme is called the gamma-glutamyl carboxylase or the vitamin K-dependent carboxylase. The carboxylation reaction will only proceed if the carboxylase enzyme is able to oxidize vitamin K hydroquinone to vitamin K epoxide at the same time. The carboxylation and epoxidation reactions are said to be coupled reactions. Vitamin K epoxide is then re-converted into vitamin K by the vitamin K epoxide reductase. These two enzymes comprise the so-called vitamin K cycle. Vitamin K2 is one of the reasons why vitamin K is rarely deficient in a human diet (vitamin K is continually recycled in our cells). Vitamin K1 is also known as phylloquinone or phytomenadione (also called phytonadione). Vitamin K2 (menaquinone, menatetrenone) is normally produced by bacteria in the large intestine, and dietary deficiency is extremely rare unless the intestines are heavily damaged or are unable to absorb the molecule, or due to decreased production by normal flora, as seen in broad spectrum antibiotic use. Menaquinone-4 is a menaquinone whose side-chain contains 4 isoprene units in an all-trans-configuration. It has a role as a bone density conservation agent, a human metabolite, an antioxidant, an anti-inflammatory agent and a neuroprotective agent. Menatetrenone has been used in trials studying the treatment of Diabetes, Osteoporosis, Prediabetic State, and Hepatocellular Carcinoma. Menatetrenone is a menaquinone compound and form of vitamin K2 with potential antineoplastic activity. Menatetrenone may act by modulating the signalling of certain tyrosine kinases, thereby affecting several transcription factors including c-myc and c-fos. This agent inhibits tumor cell growth by inducing apoptosis and cell cycle arrest. M - Musculo-skeletal system > M05 - Drugs for treatment of bone diseases > M05B - Drugs affecting bone structure and mineralization Inhibits bone resorption via PGE2 synthesis inhibition and other mechanisms. Antihaemorrhagic vitamin [CCD] A menaquinone whose side-chain contains 4 isoprene units in an all-trans-configuration. D006401 - Hematologic Agents > D003029 - Coagulants > D006490 - Hemostatics Menaquinone-4 is a vitamin K, used as a hemostatic agent, and also a adjunctive therapy for the pain of osteoporosis.

N-Nitrosotomatidine

(1R,2S,4S,5S,6S,7S,8R,9S,12S,13S,16S,18S)-5,7,9,13-tetramethyl-1-nitroso-5-oxaspiro[pentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icosane-6,2-piperidine]-16-ol

C27H44N2O3 (444.3352)

N-Nitrosotomatidine belongs to the class of organic compounds known as spirosolanes and derivatives. These are steroidal alkaloids with a structure containing a spirosolane skeleton. Siporosolane is a polycyclic compound that is characterized by a 1-oxa-6-azaspiro[4.5]decane moiety where the oxolane ring is fused to a docosahydronaphth[2,1:4,5]indene ring system. Spirosolane arises from the conversion of a cholestane side-chain into a bicyclic system containing a piperidine and a tetrahydrofuran ring. N-Nitrosotomatidine is a moderately basic compound (based on its pKa). N-Nitrosotomatidine has been identified in tomatoes. Present in tomatoes. N-Nitrosotomatidine is found in garden tomato.

(3beta,5alpha,6beta,9alpha,22E,24R)-5,9-Epidioxyergosta-7,22-diene-3,6-diol

8-[(3E)-5,6-dimethylhept-3-en-2-yl]-9,13-dimethyl-18,19-dioxapentacyclo[10.5.2.0¹,¹³.0⁴,¹².0⁵,⁹]nonadec-3-ene-2,16-diol