631899-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 631899-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,1,8,9 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 631899-56:
(8*6)+(7*3)+(6*1)+(5*8)+(4*9)+(3*9)+(2*5)+(1*6)=194
194 % 10 = 4
So 631899-56-4 is a valid CAS Registry Number.
631899-56-4Relevant articles and documents
Synthesis of modified RNA-oligonucleotides for structural investigations
Zivkovic,Engels
, p. 1167 - 1170 (2003)
RNA exhibits a higher structural diversity than DNA and is an important molecule in biology of life. It shows a number of secondary structures such as duplexes, hairpin loops, bulges, internal loops etc. However, in natural RNA, bases are limited to the f