139895-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139895-90-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,8,9 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139895-90:
(8*1)+(7*3)+(6*9)+(5*8)+(4*9)+(3*5)+(2*9)+(1*0)=192
192 % 10 = 2
So 139895-90-2 is a valid CAS Registry Number.
139895-90-2Relevant articles and documents
Determination of pH with surface-enhanced Raman fiber optic probes
Mullen, Ken I.,Wang, DaoXin,Crane, L. Gayle,Carron, Keith T.
, p. 930 - 936 (1992)
Methyl red, cresol red, and 4-pyridinethlol were examined for their ability to determine the pH at a surface. Methyl red and cresol red were coupled to cystamine. This produced a disulfide derivatized indicator which formed robust monolayers on silver sub
