NEST 50 mL Centrifuge Tube (500 count)

t-Boc-N-Amido-PEG2-propargyl is crosslinker consisting of a propargyl group and a t-Boc protected amine group. The propargyl group reacts with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry reactions. The t-Boc protected amine can be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-N-Amido-PEG2-propargyl is crosslinker consisting of a propargyl group and a t-Boc protected amine group. The propargyl group reacts with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry reactions. The t-Boc protected amine can be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Introduction

Usages:
For cultivation of bifidobacteria and lactic acid metabolites test.

Principle:
Peptone, yeast extract provide nitrogen, vitamins, and growth factors; glucose as
fermentable sugars; cysteine – HCl, vitamin K1, hemin, magnesium sulfate, calcium
chloride, sodium chloride, sodium bicarbonate training offers various bifidobacteria growth factor; dipotassium hydrogenphosphate, potassium dihydrogenphosphate buffer.

Formulation ( per liter):
Peptone 20g
Glucose 5g
Yeast powder 10g
Cysteine – hydrochloride 0.5g
Calcium chloride 0.008g
Magnesium sulfate 0.008g
Dipotassium hydrogen phosphate 0.04g
Potassium dihydrogen phosphate 0.04g
Sodium bicarbonate 0.4g
Sodium chloride 0.08g
Final pH 6.0 ± 0.2

Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.

250g

• Screening of saxitoxin in shellfish samples as low as 50ppb in sample
• Format: 25 tests (12 tests, 12 controls)
• Filters, syringes, extract collection tubes, buffers
• Run Time: 30 Minutes

Description

Saxitoxins (STXs) are naturally occurring alkaloids produced by some marine dinoflagellates and by strains of various species of freshwater cyanobacteria.  Saxitoxin is one of the prevalent paralytic shellfish toxins (PSTs). It belongs to a family of potent neurotoxins with a molecular weight around 300 Da. Saxitoxin and its derivatives are alkaloids composed of a tetrahydropurine ring system with a highly polar guanidinium group. Due to their significant toxicity, saxitoxins are closely monitored in marine environments where they can accumulate in the food chain during harmful algal blooms (HABs).  An action level of 800ppb, or 80ug per 100grams of shellfish, has been established.

Screening of saxitoxin in shellfish samples as low as 50ppb in sample
Format: 25 tests (12 tests, 12 controls)
Filters, syringes, extract collection tubes, buffers
Run Time: 30 Minutes