639476-10-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 639476-10-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,4,7 and 6 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 639476-10:
(8*6)+(7*3)+(6*9)+(5*4)+(4*7)+(3*6)+(2*1)+(1*0)=191
191 % 10 = 1
So 639476-10-1 is a valid CAS Registry Number.
639476-10-1Relevant articles and documents
Synthesis of a New Stable Conformationally Constrained 2,7-Anhydrosialic Acid Derivative
Liu, Ke-Gang,Zhou, Hai-Bin,Wu, Yu-Lin,Yao, Zhu-Jun
, p. 9528 - 9531 (2007/10/03)
A stereoseletive synthesis of 2,7-anhydrosialic acid derivative 18 was achieved from D-glucono-δ-lactone. A highly syn-selective addition of Grignard reagent to the N-benzylimine 8 served as a key step.