[shrikantvarma]

I am using tartaric acid for resolution purpose but i got confuse with types of tartaric acid
are there 4 types of tartaric acid available ?

1)L(+)Tartaric acid
2)L(-)Tartaric acid
3)D(+)Tartaric acid
4)D(-)Tartaric acid

[bolo]

Tartaric acid exist in the following forms: L(+), D(-), meso, and racemic (DL).

[shrikantvarma]

how can we note L(+) & D(-) tartaric acid in R & S form?

[Schrödinger]

Assuming that you know how to assign R and S given the Fischer projections, use the Fischer projection formulae in the following link to name them

http://en.wikipedia.org/wiki/Tartaric_acid

[java]

...the most common tartaric used for resolution is l-(+) tartaric acid....it's also the most common tartaric that is sold, the others are available but expensive...java

[shrikantvarma]

thanks to all