21531-43-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21531-43-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,3 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21531-43:
(7*2)+(6*1)+(5*5)+(4*3)+(3*1)+(2*4)+(1*3)=71
71 % 10 = 1
So 21531-43-1 is a valid CAS Registry Number.
21531-43-1Relevant articles and documents
CHEMOENZYMATIC SYNTHESIS OF CONFORMATIONALLY RIGID GLUTAMIC ACID ANALOGUES
Trigalo, F.,Buisson, D.,Azerad, R.
, p. 6109 - 6112 (2007/10/02)
All stereomers of cyclohexane cyclopentane-derived analogues of glutamic acid have been synthesized from the corresponding 3-keto-cycloalkyl carboxylic acid esters by a combination of microbial steps and standard chemical methods.