942121-50-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 942121-50-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,2,1,2 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 942121-50:
(8*9)+(7*4)+(6*2)+(5*1)+(4*2)+(3*1)+(2*5)+(1*0)=138
138 % 10 = 8
So 942121-50-8 is a valid CAS Registry Number.
942121-50-8Relevant articles and documents
An efficient epimerization of biotin sulfone derivatives to 2-epi-biotin analogs
Oh, Kyungsoo
, p. 3685 - 3688 (2007)
Reduction of biotin sulfone derivatives leads to 2-epi-biotin analogs. The stereochemistry of the side chain at C2 can be simply deduced from the diagnostic chemical shift pattern of the benzylic protons, rather than through the conventional an
