| Size | Price | Stock | Qty |
|---|---|---|---|
| 1mg |
|
||
| 5mg |
|
||
| 10mg |
|
||
| Other Sizes |
| Targets |
GRF (1-29) amide (rat) targets the growth hormone-releasing hormone receptor (GHRHR), a G-protein coupled receptor expressed on somatotroph cells in the anterior pituitary. Activation of this receptor stimulates the synthesis and secretion of growth hormone, which regulates growth, metabolism, and body composition.
|
|---|---|
| ln Vitro |
In vitro, GRF (1-29) amide (rat) stimulates growth hormone secretion from cultured pituitary cells. It activates the GHRHR, leading to increased intracellular cAMP and activation of the JAK-STAT pathway. The peptide is used to study the regulation of growth hormone secretion in rat pituitary models.
|
| ln Vivo |
The disappearance of GRF(1-29)amide (rat) was studied over time, and the results showed that the apparent half-lives in blood and liver homogenates were 18±4 minutes and 13±3 minutes, respectively. Degradation products also start to show up, all of which are less hydrophobic than the original peptide. Preparative HPLC is used to identify and separate the two main metabolites in serum [1].
In vivo, GRF (1-29) amide (rat) stimulates growth hormone secretion when administered to animal models. It is used to study endocrine function and the regulation of the growth hormone axis in rats. The peptide may also be used in studies of growth hormone deficiency and related disorders. |
| Enzyme Assay |
Receptor binding assays for GRF (1-29) amide use membrane preparations from cells expressing the GHRHR. Radiolabeled GRF or a related peptide is incubated with varying concentrations of the test compound, and binding affinity is determined by competition binding curves.
|
| Cell Assay |
Cellular assays for GRF (1-29) amide typically use primary pituitary cell cultures or cell lines expressing the GHRHR. Cells are treated with the peptide, and growth hormone secretion into the culture medium is measured by radioimmunoassay or ELISA. cAMP accumulation can also be assessed.
|
| Animal Protocol |
In vivo studies with GRF (1-29) amide (rat) are conducted in rodent models. The peptide is typically administered via intravenous or subcutaneous injection. Growth hormone levels in the blood are measured at various time points following administration.
|
| ADME/Pharmacokinetics |
Time course studies of GRF (1-29) amide (rat) disappearance show apparent half-lives of 18+/-4 minutes in serum and 13+/-3 minutes in liver homogenate. As a peptide, it is expected to have a short half-life due to rapid proteolytic degradation.
|
| Toxicity/Toxicokinetics |
Toxicity data for GRF (1-29) amide (rat) are limited. Peptide hormones are generally well-tolerated at physiological concentrations. Standard safety precautions for laboratory handling of peptides should be followed.
|
| References | |
| Additional Infomation |
GRF (1-29) amide (rat) is a research-use peptide and is not approved for therapeutic applications. It is also known as rGHRH(1-29)NH2. The peptide is used to study growth hormone regulation and endocrine function. It is available from multiple research suppliers with purity up to 99.94%.
|
| Molecular Formula |
C155H251N49O40S
|
|---|---|
| Molecular Weight |
3473.02073999998
|
| Exact Mass |
3470.88
|
| CAS # |
91826-20-9
|
| PubChem CID |
90478245
|
| Appearance |
Typically exists as solid at room temperature
|
| LogP |
6.449
|
| Hydrogen Bond Donor Count |
54
|
| Hydrogen Bond Acceptor Count |
49
|
| Rotatable Bond Count |
121
|
| Heavy Atom Count |
245
|
| Complexity |
7960
|
| Defined Atom Stereocenter Count |
32
|
| SMILES |
CCC(C)C(C(=O)NC(CC1=CC=CC=C1)C(=O)NC(C(C)O)C(=O)NC(CO)C(=O)NC(CO)C(=O)NC(CC2=CC=C(C=C2)O)C(=O)NC(CCCNC(=N)N)C(=O)NC(CCCNC(=N)N)C(=O)NC(C(C)CC)C(=O)NC(CC(C)C)C(=O)NCC(=O)NC(CCC(=O)N)C(=O)NC(CC(C)C)C(=O)NC(CC3=CC=C(C=C3)O)C(=O)NC(C)C(=O)NC(CCCNC(=N)N)C(=O)NC(CCCCN)C(=O)NC(CC(C)C)C(=O)NC(CC(C)C)C(=O)NC(CC4=CNC=N4)C(=O)NC(CCC(=O)O)C(=O)NC(C(C)CC)C(=O)NC(CCSC)C(=O)NC(CC(=O)N)C(=O)NC(CCCNC(=N)N)C(=O)N)NC(=O)C(C)NC(=O)C(CC(=O)O)NC(=O)C(C)NC(=O)C(CC5=CNC=N5)N
|
| InChi Key |
MEFNIEDWNSBZSR-UCRGYRMUSA-N
|
| InChi Code |
InChI=1S/C155H251N49O40S/c1-20-80(12)120(201-127(220)85(17)180-138(231)112(68-119(215)216)189-126(219)83(15)178-128(221)94(157)65-90-69-169-74-176-90)149(242)198-109(62-87-32-24-23-25-33-87)145(238)204-123(86(18)207)151(244)200-114(73-206)147(240)199-113(72-205)146(239)194-108(64-89-41-45-93(209)46-42-89)142(235)186-98(37-30-55-173-154(165)166)131(224)185-99(38-31-56-174-155(167)168)135(228)202-122(82(14)22-3)150(243)197-103(58-76(4)5)129(222)175-71-117(212)181-100(47-49-115(158)210)133(226)191-105(60-78(8)9)140(233)193-107(63-88-39-43-92(208)44-40-88)137(230)179-84(16)125(218)183-97(36-29-54-172-153(163)164)130(223)184-96(34-26-27-52-156)132(225)190-104(59-77(6)7)139(232)192-106(61-79(10)11)141(234)195-110(66-91-70-170-75-177-91)143(236)187-101(48-50-118(213)214)136(229)203-121(81(13)21-2)148(241)188-102(51-57-245-19)134(227)196-111(67-116(159)211)144(237)182-95(124(160)217)35-28-53-171-152(161)162/h23-25,32-33,39-46,69-70,74-86,94-114,120-123,205-209H,20-22,26-31,34-38,47-68,71-73,156-157H2,1-19H3,(H2,158,210)(H2,159,211)(H2,160,217)(H,169,176)(H,170,177)(H,175,222)(H,178,221)(H,179,230)(H,180,231)(H,181,212)(H,182,237)(H,183,218)(H,184,223)(H,185,224)(H,186,235)(H,187,236)(H,188,241)(H,189,219)(H,190,225)(H,191,226)(H,192,232)(H,193,233)(H,194,239)(H,195,234)(H,196,227)(H,197,243)(H,198,242)(H,199,240)(H,200,244)(H,201,220)(H,202,228)(H,203,229)(H,204,238)(H,213,214)(H,215,216)(H4,161,162,171)(H4,163,164,172)(H4,165,166,173)(H4,167,168,174)/t80-,81-,82-,83-,84-,85-,86+,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,110-,111-,112-,113-,114-,120-,121-,122-,123-/m0/s1
|
| Chemical Name |
(4S)-4-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-5-amino-2-[[2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-(1H-imidazol-4-yl)propanoyl]amino]propanoyl]amino]-3-carboxypropanoyl]amino]propanoyl]amino]-3-methylpentanoyl]amino]-3-phenylpropanoyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxypropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-5-carbamimidamidopentanoyl]amino]-5-carbamimidamidopentanoyl]amino]-3-methylpentanoyl]amino]-4-methylpentanoyl]amino]acetyl]amino]-5-oxopentanoyl]amino]-4-methylpentanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]propanoyl]amino]-5-carbamimidamidopentanoyl]amino]hexanoyl]amino]-4-methylpentanoyl]amino]-4-methylpentanoyl]amino]-3-(1H-imidazol-4-yl)propanoyl]amino]-5-[[(2S,3S)-1-[[(2S)-1-[[(2S)-4-amino-1-[[(2S)-1-amino-5-carbamimidamido-1-oxopentan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-4-methylsulfanyl-1-oxobutan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid
|
| HS Tariff Code |
2934.99.9001
|
| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment, avoid exposure to moisture. |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
|
| Solubility (In Vitro) |
H2O : ~16.67 mg/mL (~4.80 mM)
|
|---|---|
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 0.2879 mL | 1.4397 mL | 2.8793 mL | |
| 5 mM | 0.0576 mL | 0.2879 mL | 0.5759 mL | |
| 10 mM | 0.0288 mL | 0.1440 mL | 0.2879 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
Products are for research use only; We do not sell to patients
Copyright 2020 InvivoChem LLC | All Rights Reserved
