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Description
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Items
Standard
Appearance
A white or yellowish-white powder
Solubility
Very
slightly soluble in water, slightly soluble in alcohol, practically insoluble
in ether
Melting
point
199-203℃
The
infrared absorption spectrum
Is
concordant with the spectrum of trimethoprim EPCRS
Appearance
of solution
Not
more intensely colored than reference solution BY7
Heavy
metals
≤20ppm
Related
substances
≤0.2%
Loss
on drying
≤1.0%
Sulphated
ash
≤0.1%
Assay
98.5-101.0%
FQA:
Q1 Can i get some samples
A1 Yes,
we can supply the free sample, but the shipping cost be paid by our customers.
Q2 How to
start orders or make payments
A2
Proforma invoice will be sent first after confirmation of order, enclosed our
bank information. Payment by T/T, L/C or Paypal or Escrow(Alibaba).
Q3 How to
confirm the Product Quality before placing orders
A3 You
can get free samples for some products,you only need to pay the shipping cost
or arrange a courier to us and take the samples. You can send us your
product specifications and requests,we will manufacture the products
according to your requests.
Q4 What's
your MOQ
A4 Our
MOQ is 1kg. But usually we accept less quantity such as 100g on the condition
that sample charge is 100% paid.
Q5 How
about delivery leadtime
A5
Delivery lead time: About 3-5 days after payment confirmed. (Chinese
holiday not included)
Q6 Is
there a discount
A6
Different quantity has different discount.
Q7 How do
you treat quality complaint
A7 First
of all, our quality control will reduce the quality problem to near zero. If
there is a real quality problem caused by us, we will send you free goods for
replacement or refund your loss.
Q8 How to
contact us
A8 You
can chat with us by Trademanager,MSN&Skype Online.
You can choose your interested products and send inquiry to us.
You can dial our telephone directly or send Email to us., you will
get our reply.
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