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82299-61-4

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82299-61-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82299-61-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,2,9 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 82299-61:
(7*8)+(6*2)+(5*2)+(4*9)+(3*9)+(2*6)+(1*1)=154
154 % 10 = 4
So 82299-61-4 is a valid CAS Registry Number.

82299-61-4Relevant articles and documents

Signs of Proximate 31P, 19F and 19F, 19F Spin-Spin Coupling Constants in 2-Trifluoromethylphenyldifluorophosphine

Schaefer, Ted,Marat, Kirk,Lemire, Alberta,Janzen, Alexander F.

, p. 90 - 91 (1982)

In 2-trifluoromethylphenyldifluorophosphine the proximate couplings 4J(19F31P) and 5J(19F19F) are +68.3 and +8.3 Hz, respectively. 1J(13C31P) is -57.0 Hz, 2J(13C-1, 19F) is 9.9 Hz and 2J(13C-6, 31P) is 10.1 Hz.The trifluoromethyl substituent induces substantial changes in some coupling constants, particularly those between the 31P and ring 13C nuclei.

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