S-MTC

S-MTC is a selective type I nitric oxide synthase (NOS) inhibitor.

Product information

CAS Number: 156719-41-4

Molecular Weight: 205.28

Formula: C7H15N3O2S

Chemical Name: (2S)-2-amino-5-{[(methylsulfanyl)methanimidoyl]amino}pentanoic acid

Smiles: CSC(=N)NCCC[C@H](N)C(O)=O

InChiKey: NGVMVBQRKZPFLB-YFKPBYRVSA-N

InChi: InChI=1S/C7H15N3O2S/c1-13-7(9)10-4-2-3-5(8)6(11)12/h5H,2-4,8H2,1H3,(H2,9,10)(H,11,12)/t5-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

S-MTC (10 or 100 μM) reduces cellular NO release in the absence of Aβ1-42. At 100 μM, S-MTC decreases cell viability. S-MTC (100 μM) significantly lowers nitrite production (11.2±1.1 μM) when compared to control (no NOS inhibitor exposure; 19.6±1.2 μM). Nitrite productions after Aβ1-42 and L-NOARG (100 μM) or Aβ1-42 and S-MTC (100 μM) treatments are significantly lower than Aβ1-42 alone (33.5±2.0 and 34.5±1.6 μM, respectively). S-MTC (100 μM) is able to significantly reduce nitrite production (25.2±1.1 μM) as compared to Aβ1-42 treatment alone (38.3±2.7 μM), when administered after Aβ1-42 at the 1 h time point. S-MTC (100 μM) concentration decreases both MTT (87±1% of control) and NR (80±1% of control, respectively) levels. The co-administration of S-MTC (100 μM) and Aβ1-42 significantly reverses the effects of Aβ1-42 alone (72±2% vs 61±2% of control).

In Vivo:

S-MTC (S-methyl-L-thiocitrulline) is a selective neuronal NOS-inhibitor. Following pretreatment with S-MTC (i.c.v.), the HBO2-induced antinociception is significantly antagonized. In Experiment #2, different groups of mice are pretreated with naltrexone hydrochloride (NTX) (3.0 mg/kg, i.p.), L-NAME (1.0 μg/mouse, i.c.v.), S-MTC (1.0 μg/mouse, i.c.v.) or N5-(1-iminoethyl)-L-ornithine (L-NIO) (3.0 mg/kg, s.c.) 15-30 min prior to HBO2 treatment. The antinociceptive effect assessed 90 min after HBO2 treatment is completely abolished by NTX and L-NAME, antagonized by two-thirds by S-MTC and largely unaffected by L-NIO (F=25.57, p<0.0001). At a dose of 0.3 mg/kg, S-MTC (SMTC) causes a rise in mean blood pressure (BP). At doses of 1.0, 3.0 and 10 mg/kg, S-MTC causes falls in heart rate, rises in BP and vasoconstriction in all three vascular beds.

Products are for research use only. Not for human use.